TW202237726A - Stabilizer composition for silyl-modified polymer sealants - Google Patents

Abstract

The invention is directed to stabilizer compositions comprising at least one oxalanilide UV absorber and/or at least one (2-hydroxyphenyl)- s-triazine UV absorber, and at least one oligomeric hindered amine light stabilizer (HALS), optionally further comprising at least one phenolic antioxidant, at least one liquid diluent and/or further components. Said stabilizer compositions are preferably used in sealants or adhesives based on silyl-modified polymers (SMP). The invention also deals with a polymer composition based on silyl-modified polymers (SMP) comprising the new stabilizer combination of oxalanilide UV absorber and/or (2-hydroxyphenyl)- s-triazine UV absorber, and oligomeric hindered amine light stabilizer (HALS), optionally further comprising phenolic antioxidant and liquid diluent and/or further components.

Description

Stabilizer composition for silicon-based modified polymer sealant

The present invention relates to a stabilizer composition comprising at least one oxanilide UV absorber and/or at least one (2-hydroxyphenyl)-symmetric-triazine UV absorber, and at least one oligomeric hindered amine light stabilizer ( hindered amine light stabilizer) (HALS), optionally further comprising at least one phenolic antioxidant, at least one liquid diluent and/or other components. The stabilizer composition is preferably used in a silicon-modified polymer (SMP)-based sealant or adhesive. The present invention also relates to polymer compositions based on silicon-modified polymers (SMP) comprising oxanilide UV absorbers and/or (2-hydroxyphenyl)-symmetric-triazine UV absorbers and oligomerization hindered Amine Light Stabilizers (HALS), optionally additionally comprising novel stabilizer combinations of phenolic antioxidants and liquid diluents and/or other components.

Furthermore, the present invention relates to a method for preparing stabilizer compositions and the use of these stabilizer compositions as thermal and/or UV stabilizers in SMP sealants and adhesives.

Silicon-modified polymers (SMPs), such as silicon-modified polyethers (also known as MS polymers), silicon-based modified polyurethanes (also known as SPUR polymers), and silicon-based modified acrylic polymers, as well as other The use as sealants and adhesives, eg in the construction industry, has been known for many years, see eg US 2002/198308, US 6,077,896, EP-A 1 288 247 and US 2003/0105261. Examples of commercially available SMP products are Kaneka MS Polymers ^® (eg MS Polymer ^® S203H, MS Polymer ^® S303H) or Polymers ST from Evonik. Various MS Polymer ^® grades are commercially available, varying in degree of functionalization (number and nature of groups attached to the backbone) and backbone structure over a wide range of viscosities.

This silicon-modified polymer can be used as the basis for a moisture-curable 1K or 2K sealant or adhesive composition, where the composition can be stored in a substantially moisture-free state and rapidly decomposes from the surface when exposed to atmospheric conditions. solidify. Typically, SMP sealants cure from a liquid or gel state to an elastic solid, where curing means cross-linking the polymer chains through hydrolysis and cross-linking reactions of the silicon groups.

Silicon-modified polymers (SMPs) are, for example, used for many years as sealants and adhesives in the construction, aerospace, automotive, marine and other related industries. These products are typically free of (iso)cyanates and solvents and exhibit good properties such as adhesion on various substrates, excellent adhesion durability with limited surface preparation and good temperature and UV stability . Typically, the main features of SMP sealants are that they are very elastic and paintable.

WO 2016/081823 describes stabilizer compositions for protecting organic materials from UV light and thermal degradation. The stabilizer composition comprises UV absorbers selected from o-hydroxyphenyl triazine compounds, o-hydroxybenzophenone compounds, o-hydroxyphenyl benzotriazinone compounds and benzoxazinone compounds; co-active agents ( co-active agent) (for example selected from C ₁₂ -C ₆₀ alcohols, fatty acid esters and alkoxylated derivatives thereof) and hindered amine light stabilizers (HALS).

Document US 2010/0087576 describes moisture-curable silicone compositions comprising oxanilide UV stabilizers. Furthermore, the combination of UV absorber and hindered amine light stabilizer in silicon-based modified polymer sealant is described in JP 2010/248408 and CN 107892900, for example.

Document CN 106833479 discloses a silane polyether sealant for automobiles, which includes heat stabilizers, UV absorbers, hindered amine light stabilizers and antioxidants. Document JP 2010/270241 describes stabilizer-containing silicone foams comprising hindered phenol antioxidants, hindered amine light stabilizers and UV absorbers.

WO 2012/010570 teaches a sealant (e.g. a sealant based on silane-terminated polyether), wherein the additive combination comprises at least two different sterically hindered amines, such as Tinuvin ^® 622 and Tinuvin ^® 144, and a UV absorber, Such as Tinuvin ^® 312, additive combination. This document discloses an additive combination comprising at least two sterically hindered amines, at least one other stabilizer, a dispersant (dispersant polymer) and a plasticizer.

At present, the combination of hindered amine light stabilizer and benzotriazole type UV absorber is commonly used in the light and heat stabilized SMP sealant industry. Usually HALS sebacic acid bis(2,2,6,6-tetramethyl-4-hexahydropyridyl ester) (CAS-No. 52829-07-9) and UV absorber 2-(2'-hydroxy- A combination of 3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole (CAS-No. 3896-11-5) was used to provide photothermal stabilization. However, benzotriazole-based UV absorbers have the disadvantage of SMP sealants and adhesives turning yellow before and during application, resulting in coloring of the final product, which is unacceptable in many applications.

In addition, the stabilizer Tinuvin ^® 5866 is a mixture of oxaniline UV absorber and alkaline HALS stabilizer, which is commonly used in SMP compositions. One disadvantage is that these stabilizers are classified as hazardous under the current EU regulations on classification, labeling and packaging of chemicals. Furthermore, these stabilizers are typically solid and supplied in powder form. The use of powdered stabilizers has the disadvantages of more difficult ingredients, especially in small amounts, and the powdered stabilizers are prone to dusting during measurement, mixing and/or application. Furthermore, the formation of powdered stabilizer clumps prevents uniform distribution of the stabilizer in the customer's final product and typically requires costly processing (eg, grinding) of the powdered stabilizer ingredients.

There is a need to provide new and improved stabilizer combinations for SMP encapsulants with improved heat and weather resistance that do not cause incipient yellowing (this means after mixing with the polymer prior to the curing step (such as in barrel)), does not contain harmful compounds, will not cause color damage to the stabilized SMP composition after heat treatment, and will not damage the performance of the SMP sealant (such as mechanical properties, chemical resistance, adhesion and flow) variable nature). Furthermore, stabilizer combinations with improved applicability in terms of formulation and application are desired. For this reason, many applications require liquid stabilizer compositions.

It has surprisingly been found that, comprising at least one oxanilide UV absorber and/or at least one (2-hydroxyphenyl)-symmetric-triazine UV absorber and at least one selected hindered amine stabilizer (HALS), and Stabilizer combinations, especially synergistic stabilizer combinations, optionally including at least one selected phenolic antioxidant and at least one liquid diluent, significantly improve light and heat stabilization without affecting the inherently beneficial properties of SMP encapsulants. The fluid diluent further improves the applicability of the stabilizer combination by providing it simply, quickly, and evenly distributing it in the final SMP encapsulant.

其中 R _a、R _b、R _c、R _d、R _e及R _f係彼此獨立地選自氫、具有1至20個碳原子的烷基、具有1至20個碳原子和1至4個氧原子的烷氧基； 及/或 (A2) 一或多種根據式(I.2)之草醯苯胺化合物作為組分A2：

其中 R _a及R _b係彼此獨立地選自氫、具有1至20個，較佳地2至12個，碳原子的烷基、具有1至20個，較佳地2至12個，碳原子和1至4個，較佳地1至2個，氧原子(烷氧基之氧原子)的烷氧基， 及 (B)  至少一種受阻胺光穩定劑作為組分B，其包含至少一種根據式(II)-1的寡聚受阻胺光穩定劑B1：

其中 n及m彼此獨立地為0至100，較佳地0至10，更佳地0至5的數字，其先決條件為n和m不皆為0； R ₁為氫、具有5至7個碳原子的環烷基、或具有1至12個碳原子的烷基； R ₂及R ₃係彼此獨立地選自氫、具有1至18個碳原子的烷基，或與彼等所連接的碳原子一起為5至13員環烷基環，或與彼等所連接的碳原子一起為式(II)-4的基團：

其中R ₁係如上所定義；及 R ₄及R ₅係彼此獨立地選自氫、具有1至22個碳原子的烷基、氧基O*、-OH、-NO、-CH ₂CN、苯甲基、烯丙基、具有1至30個碳原子的烷氧基、具有5至12個碳原子的環烷氧基、具有6至10個碳原子的芳氧基，其中該芳基可另外經取代、具有7至20個碳原子的芳烷氧基，其中該芳基可另外經取代、具有3至10個碳原子的烯基、具有3至6個碳原子的炔基、具有1至10個碳原子的醯基、鹵素、未經取代之苯基或經C ₁-C ₄-烷基取代之苯基。 The present invention relates to a stabilizer composition comprising: (A) at least one UV absorber as component A, wherein the UV absorber A comprises: (A1) one or more (2- Hydroxyphenyl)-symmetric-triazine compounds as component A1:

wherein R _a , R _b , R _c , R _d , _Re and R _f are independently selected from hydrogen, an alkyl group having 1 to 20 carbon atoms, an alkyl group having 1 to 20 carbon atoms and 1 to 4 oxygen atom; and/or (A2) one or more oxanilide compounds according to formula (I.2) as component A2:

wherein R _a and R _b are independently selected from hydrogen, having 1 to 20, preferably 2 to 12, alkyl groups of carbon atoms, having 1 to 20, preferably 2 to 12, carbon atoms and 1 to 4, preferably 1 to 2, alkoxy groups of oxygen atoms (oxygen atoms of alkoxy groups), and (B) at least one hindered amine light stabilizer as component B comprising at least one Oligomeric hindered amine light stabilizer B1 of formula (II)-1:

Wherein n and m are 0 to 100 independently of each other, preferably 0 to 10, more preferably 0 to 5 figures, and its prerequisite is that n and m are not all 0; R ₁ is hydrogen, has 5 to 7 A cycloalkyl group of carbon atoms, or an alkyl group having 1 to 12 carbon atoms; R ₂ and R ₃ are independently selected from hydrogen, an alkyl group having 1 to 18 carbon atoms, or an alkyl group connected to them The carbon atoms together are a 5 to 13 membered cycloalkyl ring, or together with the carbon atoms to which they are attached a group of formula (II)-4:

wherein R ₁ is as defined above; and R ₄ and R ₅ are independently selected from hydrogen, alkyl having 1 to 22 carbon atoms, oxy O*, -OH, -NO, -CH ₂ CN, benzene Methyl, allyl, alkoxy having 1 to 30 carbon atoms, cycloalkoxy having 5 to 12 carbon atoms, aryloxy having 6 to 10 carbon atoms, wherein the aryl can be additionally Substituted, aralkyloxy groups having 7 to 20 carbon atoms, wherein the aryl group may be additionally substituted, alkenyl groups having 3 to 10 carbon atoms, alkynyl groups having 3 to 6 carbon atoms, alkynyl groups having 1 to 6 carbon atoms Acyl of 10 carbon atoms, halogen, unsubstituted phenyl or phenyl substituted by C ₁ -C ₄ -alkyl.

The stabilizer composition may optionally further comprise at least one of the following components C, D and/or E: (C) at least one phenolic antioxidant as component C; (D) at least one liquid diluent as component D; and (E) At least one other additive as component E.

The stabilizer composition of the present invention can be advantageously used in sealants and adhesives based on silicon-based modified polymers, such as silicon-based modified polyethers. The stabilizer composition results in improved UV and thermal stability compared to standard stabilizers (eg Tinuvin® 326) and prevents incipient yellowing of SMP encapsulants. Furthermore, the stabilizer composition of the present invention does not cause color damage (eg, based on the CIE color system) after heat treatment of the stabilized SMP composition. Preferably, the mechanical properties of the stabilized SMP composition are the same or improved.

Preferably, the stabilizer composition of the present invention is required not to be classified as hazardous according to the current European Union Regulation on Classification, Labeling and Packaging of Chemical Substances (CLP). In particular, this Regulation applies to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on the classification, labeling and packaging of substances and mixtures, amending and repealing Directive 67/548/EEC and 1999 /45/EC, and as amended by Regulation (EC) No 1907/2006.

The stabilizer composition of the present invention is preferably in the form of a substantially liquid composition, such as a solution, dispersion, emulsion, suspension or paste, preferably a solution or a suspension, especially a solution. In particular, the stabilizer composition is in substantially liquid form due to the liquid diluent D. Furthermore, one or more of the liquid components A, B, C and/or E may be in liquid form.

For the purposes of the present invention, the expression "substantially liquid" means that the composition and the main liquid part may additionally contain a certain part of solid components, examples being undissolved components A, B and optionally C and/or E.

For the purposes of the present invention, the expression "liquid" means that the composition has low fluidity at least at room temperature, preferably at least in the range of less than 10°C to 30°C, more preferably at least in the range of less than 0°C to 40°C Inside.

For the purposes of the present invention, the expression "alkyl" includes linear straight or branched chain alkyl groups. Preferably straight chain C ₁ -C ₂₀ alkyl, especially straight chain C ₁ -C ₁₈ alkyl, preferably straight chain C ₁ -C ₁₂ alkyl and branched C ₃ -C ₂₀ alkyl, especially Branched C ₃ -C ₁₈ alkyl, preferably branched C ₃ -C ₁₂ alkyl. Examples of alkyl groups are, in particular, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, secondary butyl, tertiary butyl, n-pentyl, isopentyl, 1 -Methylbutyl, tertiary pentyl, neopentyl, n-hexyl, 3-hexyl, 2-methyl-1-pentyl, 3-methyl-1-pentyl, 4-methyl-1-pentyl Base, 2-methyl-2-pentyl, 3-methyl-2-pentyl, 4-methyl-2-pentyl, 2-methyl-3-pentyl, 3-methyl-3-pentyl base, 2,2-dimethyl-1-butyl, 2,3-dimethyl-1-butyl, 3,3-dimethyl-1-butyl, 2-ethyl-1-butyl , 2,3-dimethyl-2-butyl, 3,3-dimethyl-2-butyl, n-heptyl, n-octyl, 1-methylheptyl, 2-ethylhexyl, 2, 4,4-Trimethyl-pentyl, 1,1,3,3-tetramethylbutyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl , n-tetradecyl, n-pentadecyl, n-hexadecyl, n-heptadecyl, n-octadecyl and n-eicosyl.

For the purposes of the present invention, the expression "alkoxy" is an alkyl group bonded via an oxygen atom, wherein the carbon chain of the alkyl group may be interrupted by one or more, preferably 1 to 3 non-adjacent heteroatoms -O- interruption. Preferred are the above-mentioned alkyl groups. Examples of alkoxy are methoxy, ethoxy, n-propoxy, 1-methylethoxy, butoxy, 1-methylpropoxy, 2-methylpropoxy, 1,1- Dimethylethoxy, n-pentyloxy, 1-methylbutoxy, 2-methylbutoxy, 3-methylbutoxy, 1,1-dimethylpropoxy, 1,2 -Dimethylpropoxy, 2,2-dimethylpropoxy, 1-ethylpropoxy, hexyloxy, 1-methylpentyloxy, 2-methylpentyloxy, 3-methoxy pentyloxy, 4-methylpentyloxy, 1,1-dimethylbutoxy, 1,2-dimethylbutoxy, 1,3-dimethylbutoxy, 2,2 di Methylbutoxy, 2,3-dimethylbutoxy, 3,3-dimethylbutoxy, 1-ethylbutoxy, 2-ethylbutoxy, 1,1,2- Trimethylpropoxy, 1,2,2-trimethylpropoxy, 1-ethyl-1-methylpropoxy or 1-ethyl-2-methylpropoxy, hexyloxy, Group -(OC ₂ H ₄ ) _u -(OC ₃ H ₆ ) _v -H, wherein u and v are independently numbers from 0 to 19, preferably from 0 to 12, with the prerequisite that u+v is 1 to 20, preferably 2 to 12.

stabilizer composition

其中 R _a、R _b、R _c、R _d、R _e及R _f係彼此獨立地選自氫、具有1至20個碳原子的烷基、具有1至20個碳原子和1至4個氧原子的烷氧基； 及/或 (A2) 一或多種根據式(I.2)之草醯苯胺化合物作為組分A2：

其中 R _a及R _b係彼此獨立地選自氫、具有1至20個碳原子的烷基、具有1至20個碳原子和1至4個氧原子的烷氧基， 及 (B)  至少一種受阻胺光穩定劑作為組分B，其包含(或由以下組成)至少一種根據式(II)-1的寡聚受阻胺光穩定劑B1：

其中 n及m彼此獨立地為0至100，較佳地0至10，更佳地0至5的數字，其先決條件為n和m不皆為0； R ₁為氫、具有5至7個碳原子的環烷基、或具有1至12個碳原子的烷基； R ₂及R ₃係彼此獨立地選自氫、具有1至18個碳原子的烷基，或與彼等所連接的碳原子一起為5至13員環烷基環，或與彼等所連接的碳原子一起為式(II)-4的基團：

其中R ₁係如上所定義；及 R ₄及R ₅係彼此獨立地選自氫、具有1至22個碳原子的烷基、氧基O*、-OH、-NO、-CH ₂CN、苯甲基、烯丙基、具有1至30個碳原子的烷氧基、具有5至12個碳原子的環烷氧基、具有6至10個碳原子的芳氧基，其中該芳基可另外經取代、具有7至20個碳原子的芳烷氧基，其中該芳基可另外經取代、具有3至10個碳原子的烯基、具有3至6個碳原子的炔基、具有1至10個碳原子的醯基、鹵素、未經取代之苯基或經C ₁-C ₄-烷基取代之苯基。 The stabilizer composition of the present invention at least comprises (or consists of): (A) at least one UV absorber as component A, wherein the UV absorber A comprises (or consists of): (A1) one or more (2-Hydroxyphenyl)-symmetric-triazine compounds of the formula (I.1) as component A1:

wherein R _a , R _b , R _c , R _d , _Re and R _f are independently selected from hydrogen, an alkyl group having 1 to 20 carbon atoms, an alkyl group having 1 to 20 carbon atoms and 1 to 4 oxygen atom; and/or (A2) one or more oxanilide compounds according to formula (I.2) as component A2:

wherein R _a and R _b are independently selected from hydrogen, alkyl having 1 to 20 carbon atoms, alkoxy having 1 to 20 carbon atoms and 1 to 4 oxygen atoms, and (B) at least one A hindered amine light stabilizer as component B comprising (or consisting of) at least one oligomeric hindered amine light stabilizer B1 according to formula (II)-1:

Wherein n and m are 0 to 100 independently of each other, preferably 0 to 10, more preferably 0 to 5 figures, and its prerequisite is that n and m are not all 0; R ₁ is hydrogen, has 5 to 7 A cycloalkyl group of carbon atoms, or an alkyl group having 1 to 12 carbon atoms; R ₂ and R ₃ are independently selected from hydrogen, an alkyl group having 1 to 18 carbon atoms, or an alkyl group connected to them The carbon atoms together are a 5 to 13 membered cycloalkyl ring, or together with the carbon atoms to which they are attached a group of formula (II)-4:

wherein R ₁ is as defined above; and R ₄ and R ₅ are independently selected from hydrogen, alkyl having 1 to 22 carbon atoms, oxy O*, -OH, -NO, -CH ₂ CN, benzene Methyl, allyl, alkoxy having 1 to 30 carbon atoms, cycloalkoxy having 5 to 12 carbon atoms, aryloxy having 6 to 10 carbon atoms, wherein the aryl can be additionally Substituted, aralkyloxy groups having 7 to 20 carbon atoms, wherein the aryl group may be additionally substituted, alkenyl groups having 3 to 10 carbon atoms, alkynyl groups having 3 to 6 carbon atoms, alkynyl groups having 1 to 6 carbon atoms Acyl of 10 carbon atoms, halogen, unsubstituted phenyl or C ₁ -C ₄ -alkyl substituted phenyl.

In addition to the UV absorber A and the hindered amine light stabilizer B, the stabilizer composition further comprises one or more of the following components C, D and/or E: (C) at least one phenolic antioxidant as component C; (D) at least one liquid diluent as component D; and/or (E) At least one other additive as component E.

In a specific example of the present invention, the stabilizer composition of the present invention at least includes (or consists of): (A) At least one UV absorber as component A, wherein the UV absorber A comprises (or consists of): one or more (2-hydroxyphenyl)-symmetric-triazines according to formula (I.1) Compound as component A1; and (B) At least one hindered amine light stabilizer as component B, which comprises (or consists of): at least one oligomeric hindered amine light stabilizer B1.

In an alternative embodiment of the present invention, the stabilizer composition of the present invention at least comprises (or consists of): (A) at least one UV absorber as component A, wherein the UV absorber A comprises (or consists of): one or more oxanilide compounds according to formula (I.2) as component A2; and (B) At least one hindered amine light stabilizer as component B, which comprises (or consists of): at least one oligomeric hindered amine light stabilizer B1.

In another alternative embodiment of the present invention, the stabilizer composition of the present invention at least includes (or consists of): (A) at least one UV absorber as component A, wherein the UV absorber A comprises (or consists of): (A1) one or more (2-hydroxyphenyl)-symmetric-triazine compounds according to formula (I.1) as component A1; and (A2) one or more oxanilide compounds according to formula (I.2) as component A2; and (B) At least one hindered amine light stabilizer as component B, which comprises (or consists of): at least one oligomeric hindered amine light stabilizer B1.

In a preferred embodiment of the present invention, the stabilizer composition is in liquid form. This can be achieved by using UV absorber A and/or hindered amine light which are liquid at room temperature, preferably at least in the range of less than 10°C to 30°C, more preferably at least in the range of at least 0°C to 40°C. Stabilizer B is achieved.

In an alternative embodiment, the stabilizer composition further comprises at least one liquid diluent D to provide the stabilizer composition in liquid form. The liquid diluent D can be selected from a suitable liquid diluent, such as a suitable solvent or a liquid adjuvant or a combination of the above. Therefore, in a specific example of the present invention, the stabilizer composition comprises (or consists of the following): (A) at least one UV absorber A; (B) at least one hindered amine light stabilizer B; and (D) At least one liquid diluent as component D.

In a specific example of the present invention, the stabilizer composition comprises (or consists of): (A) at least one UV absorber A; (B) at least one hindered amine light stabilizer B; and (C) At least one phenolic antioxidant as component C.

It has been found that the addition of at least one phenolic antioxidant as component C further improves the thermal and UV stability of SMP compositions comprising stabilizer combinations of components A, B and C.

其中 R _x及R _y係彼此獨立地選自氫、鹵素或具有1至10個碳原子的烷基； R _z係選自氫或具有1至10個碳原子的烷基； R _w係選自羥基、具有1至18個碳原子的烷氧基、具有1至4個烷基碳原子的苯基烷氧基、具有5至8個碳原子的環烷氧基或式(III)c之基團

其中Z ₁和Z ₂係彼此獨立地選自氫、具有1至18個碳原子的烷基、苯基及具有5至8個碳原子的環烷基； X          係選自-O-(CH ₂) _q-O-；-(OCH ₂-CH ₂) _q-O-； -O-(CH ₂) _q-S-(CH ₂) _q-O；-NH-(CH ₂) _q-NH-；-NH-NH-，其中q為1至12之整數，或以下基團：

p          係0或1至6，較佳地1至4之整數。 In another preferred embodiment of the present invention, the stabilizer composition comprises (or consists of): (A) at least one UV absorber A; (B) at least one hindered amine light stabilizer B; and (C) At least one phenolic antioxidant as component C, wherein the antioxidant C consists of one or more phenolic compounds according to formula (III)a and/or (III)b:

wherein R _x and R _y are independently selected from hydrogen, halogen or an alkyl group having 1 to 10 carbon atoms; R _z is selected from hydrogen or an alkyl group having 1 to 10 carbon atoms; R _w is selected from Hydroxy, alkoxy having 1 to 18 carbon atoms, phenylalkoxy having 1 to 4 alkyl carbon atoms, cycloalkoxy having 5 to 8 carbon atoms or a group of formula (III)c group

wherein Z ₁ and Z ₂ are independently selected from hydrogen, alkyl having 1 to 18 carbon atoms, phenyl and cycloalkyl having 5 to 8 carbon atoms; X is selected from -O-(CH ₂ ) _q -O-; -(OCH ₂ -CH ₂ ) _q -O-; -O-(CH ₂ ) _q -S-(CH ₂ ) _q -O; -NH-(CH ₂ ) _q -NH-; -NH-NH-, wherein q is an integer from 1 to 12, or the following groups:

p is 0 or an integer of 1-6, preferably 1-4.

In another embodiment of the present invention, the stabilizer composition is provided in a substantially liquid form, wherein at least one of components A, B and/or optionally C is provided in a liquid form.

In an alternative embodiment, the stabilizer composition further comprises at least one liquid diluent D to provide a stabilizer composition in liquid form, the stabilizer composition comprising (or consisting of): (A) at least one UV absorber as component A; (B) at least one hindered amine light stabilizer as component B; (C) at least one phenolic antioxidant as component C; and (D) At least one liquid diluent as component D.

In another embodiment of the present invention, the stabilizer composition may further include at least one other additive as component E. Therefore the present invention also relates to a stabilizer composition comprising: (A) at least one UV absorber as component A; (B) at least one hindered amine light stabilizer as component B; and (E) At least one other additive as component E.

In a specific example of the present invention, the stabilizer composition comprises (or consists of): (A) at least one UV absorber as component A; (B) at least one hindered amine light stabilizer as component B; (C) at least one phenolic antioxidant as component C; and (E) At least one other additive as component E.

In another embodiment of the present invention, the stabilizer composition is provided in a substantially liquid form, which comprises (or consists of): (A) at least one UV absorber as component A; (B) at least one hindered amine light stabilizer as component B; (C) at least one phenolic antioxidant as component C; and (E) at least one other additive as component E; Wherein at least one of components A, B, C and/or E is provided in a liquid form.

In an alternative embodiment of the invention, the stabilizer composition is provided in a substantially liquid form comprising (or consisting of): (A) at least one UV absorber as component A; (B) at least one hindered amine light stabilizer as component B; (C) at least one phenolic antioxidant as component C; (D) at least one liquid diluent as component D; and (E) at least one other additive as component E; Wherein at least component D and optionally at least one of components A, B, C and/or E are provided in liquid form.

In a specific example of the present invention, the stabilizer composition comprises (or consists of): (A) at least one UV absorber as component A; (B) at least one hindered amine light stabilizer as component B; (C) at least one phenolic antioxidant as component C; (D) at least one liquid diluent as component D; and (E) optionally at least one other additive as component E.

In a preferred embodiment, the stabilizer composition comprises (or consists of): (A) 20 to 60% by weight, preferably 25 to 50% by weight, more preferably 30 to 45% by weight of at least one UV absorber A, based on the total stabilizer composition; and (B) based on the total stabilizer composition, 40 to 80% by weight, preferably 50 to 75% by weight, more preferably 55 to 70% by weight of at least one hindered amine light stabilizer B; Wherein the sum of the amounts of components A and B is 100% by weight of the stabilizer composition.

In the alternative, the stabilizer composition comprises (or consists of): (A) 15 to 49% by weight, preferably 20 to 44% by weight, more preferably 25 to 39% by weight of at least one UV absorber A, based on the total stabilizer composition; (B) 20 to 69% by weight, preferably 30 to 64% by weight, more preferably 40 to 59% by weight of at least one hindered amine light stabilizer B, based on the total stabilizer composition; and (C) based on the total stabilizer composition, 1 to 50% by weight, preferably 1 to 30% by weight, more preferably 1 to 20% by weight of at least one phenolic antioxidant C; Wherein the sum of the amounts of components A, B and C is 100% by weight of the stabilizer composition.

In the alternative, the stabilizer composition comprises (or consists of): (A) 5 to 49% by weight, preferably 8 to 39% by weight, more preferably 10 to 29% by weight of at least one UV absorber A, based on the total stabilizer composition; (B) based on the total stabilizer composition, 10 to 59% by weight, preferably 12 to 49% by weight, more preferably 15 to 39% by weight of at least one hindered amine light stabilizer B; (C) based on the total stabilizer composition, 1 to 50% by weight, preferably 1 to 20% by weight, more preferably 1 to 15% by weight of at least one phenolic antioxidant C; (D) 30 to 79% by weight, preferably 35 to 69% by weight, more preferably 40 to 64% by weight of at least one liquid diluent D, based on the total stabilizer composition; and (E) based on the total stabilizer composition, 0 to 50% by weight, preferably 0 to 20% by weight, more preferably 0 to 10% by weight of at least one other additive E; Wherein the sum of the amounts of components A, B, C, D and E is 100% by weight of the stabilizer composition.

The amount of component A can be adjusted in the presence of optional components E, wherein the sum of the amounts is or does not exceed 100% by weight.

Preferably, UV adsorbent A and hindered amine light stabilizer B are in a ratio of 10:1 to 1:10, preferably 5:1 to 1:5, more preferably 2:1 to 1:2, especially 1 A: B weight ratio within the range of 1 to 1:2 exists in the stabilizer composition of the present invention.

Preferably, UV absorber A and antioxidant C - if present - are present in a ratio of 10:1 to 1:5, preferably 8:1 to 1:1, more preferably 5:1 to 1.5: The A:C weight ratio within the range of 1 exists in the stabilizer composition of the present invention.

In a preferred embodiment, the stabilizer composition comprises (or preferably consists of): (A) 8 to 39% by weight, preferably 10 to 29% by weight, more preferably 10 to 20% by weight of at least one UV absorber A, based on the total stabilizer composition; (B) based on the total stabilizer composition, 12 to 49% by weight, preferably 15 to 39% by weight, more preferably 20 to 35% by weight of at least one hindered amine light stabilizer B; (C) 1 to 20% by weight, preferably 1 to 15% by weight, more preferably 2 to 10% by weight of at least one phenolic antioxidant C, based on the total stabilizer composition; and (D) 35 to 69% by weight, preferably 40 to 64% by weight, more preferably 40 to 55% by weight of at least one liquid diluent D, based on the total stabilizer composition; Wherein the sum of the amounts of components A, B, C and D is 100% by weight of the stabilizer composition.

In a preferred embodiment, the stabilizer composition of the present invention comprises (or preferably consists of): (A) 10 to 29% by weight, preferably 12 to 25% by weight, more preferably 13 to 20% by weight of at least one UV absorber A, based on the total stabilizer composition; (B) based on the total stabilizer composition, 15 to 39% by weight, preferably 20 to 35% by weight, more preferably 22 to 33% by weight of at least one hindered amine light stabilizer B; (C) 1 to 15% by weight, preferably 2 to 10% by weight, more preferably 3 to 9% by weight of at least one phenolic antioxidant C, based on the total stabilizer composition; (D) 40 to 64% by weight, preferably 40 to 55% by weight, more preferably 43 to 53% by weight, based on the total stabilizer composition, of at least one liquid diluent D, preferably comprising at least one a liquid moisture scavenger and/or at least one solvent; Wherein the sum of the amounts of components A, B, C and D is 100% by weight of the stabilizer composition.

In another preferred embodiment, the stabilizer composition of the present invention comprises (or preferably consists of): (A) 10 to 29% by weight of at least one UV absorber A, based on the total stabilizer composition; (B) 15 to 39% by weight of at least one hindered amine light stabilizer B, based on the total stabilizer composition; (C) 1 to 15% by weight of at least one phenolic antioxidant C, based on the total stabilizer composition; (D) 40 to 64% by weight of at least one liquid diluent D, based on the total stabilizer composition; (E) 0.01 to 20% by weight of at least one other additive E, based on the total stabilizer composition; Wherein the sum of the amounts of components A, B, C, D and E is 100% by weight of the stabilizer composition. UV absorber (component A)

The stabilizer composition of the present invention comprises a UV absorber as component A, wherein the UV absorber is selected from: one or more oxalyl anilide compounds, which are oxalyl anilide (N,N'-diphenyl oxalic acid diamide , CAS-No. 620-81-5) or derivatives thereof; and/or one or more (2-hydroxyphenyl)-symmetry-triazine compounds. Preferably, the UV absorber component A does not contain hydroxy-substituted oxanilide compounds.

It was surprisingly found that the combination of UV absorber A and oligomeric hindered amine light stabilizer B1 results in a stabilizer Composition improvements, especially in color.

Preferably, the UV absorber A is present in an amount of 20 to 60% by weight, preferably 25 to 50% by weight, more preferably 30 to 50% by weight, based on the total amount of components A and B in the stabilizer composition. 45% by weight. In a preferred embodiment, based on the total amount of components A, B, C, D and E in the stabilizer composition, the UV adsorbent A is present in an amount of 5 to 49% by weight, preferably 8 to 49% by weight. 39% by weight, more preferably 10 to 29% by weight, also preferably 12 to 25% by weight, especially 13 to 20% by weight. Component A1

其中 R _a、R _b、R _c、R _d、R _e及R _f係彼此獨立地選自氫、具有1至20個碳原子的烷基、具有1至20個碳原子和1至4個氧原子的烷氧基。 In a specific example, the UV absorber A consists of one or more (2-hydroxyphenyl)-symmetric-triazine compounds A1 according to the formula (I.1):

wherein R _a , R _b , R _c , R _d , _Re and R _f are independently selected from hydrogen, an alkyl group having 1 to 20 carbon atoms, an alkyl group having 1 to 20 carbon atoms and 1 to 4 oxygen Atom alkoxy.

The substituents R _a , R _b , R _c and/or R _d are preferably located at intermediate positions on each ring. Preferably, at least one substituent R _a , R _b , R _c and/or R _d on each ring is not hydrogen. More preferably, R _a , R _b , R _c and R _d are located between each ring and are not hydrogen, that is, R _a , R _b , R _c and R _d are selected from the group having 1 to 20 carbon atoms Alkyl, alkoxy having 1 to 20 carbon atoms and 1 to 4 oxygen atoms.

In a preferred embodiment, the substituents R _a , R _b , R _c and R _d represent an alkyl group having 1 to 20, preferably 1 to 12, more preferably 1 to 4 carbon atoms. More preferably, the substituents R _a , R _b , R _c and R _d are selected from methyl, ethyl or propyl, more preferably methyl, and there is a meta position on each ring.

The substituents R _e and/or R _f are preferably at the ortho and/or para positions. Preferably, one of the substituents R _e or R _f on the ring is hydrogen. Preferably, one of the substituents _Re or _Rf on the ring is hydrogen and the substituent _Re or _Rf which is not hydrogen is in the para position on the ring.

。 In a preferred embodiment, one substituent R _e or R _f on the ring is hydrogen, and one substituent R _e or R _f on the ring is at the para position and represents 1 to 20, preferably 5 to An alkoxy group of 18, more preferably 10 to 17 carbon atoms and 1 to 4, preferably 2 to 4 oxygen atoms. More preferably one substituent R _e or R _f on the ring is hydrogen, and a substituent R _e or R _f at the para-position on the other ring is C ₁₀ -C ₁₇ alkoxy, more preferably the following formula ( I.1) Substituents of-a:

.

其中 R _a、R _b、R _c及R _d係係如上所定義，且 R _g係選自具有7至15個碳原子之烷基。 In another preferred embodiment, the UV absorber A comprises or consists of one or more (2-hydroxyphenyl)-symmetric-triazine compounds A1 according to the formula (I.1'):

wherein R _a , R _b , R _c and R _d are as defined above, and R _g is selected from alkyl groups having 7 to 15 carbon atoms.

Preferred UV absorbers A comprise or consist of one or more (2-hydroxyphenyl)-symmetric-triazine compounds A1 selected from compounds of the following formulas (I.1)-1 and (I.1)-2:

In a preferred embodiment of the present invention, the preferred UV absorber A comprises or consists of (2-hydroxyphenyl)-symmetric - Composition of mixtures of triazine compounds A1. Preferably, the UV absorber A comprises compounds selected from the group consisting of compound (I.1)-1 to compound (I.1)-2 in a ratio of about 1:5 to 5:1, more preferably 1:2 to 2:1 , especially mixtures of (2-hydroxyphenyl)-symmetric-triazine compounds of compounds (I.1)-1 and (I.1)-2 from 1:1.2 to 1.2:1. Component A2

其中 R _a及R _b係彼此獨立地選自氫、具有1至20個，較佳地2至12個碳原子的烷基、具有1至20個，較佳地2至12個碳原子及1至4個，較佳地1至2個氧原子(即，烷氧基氧原子)的烷氧基。 In an alternative embodiment, the stabilizer composition comprises a UV absorber A comprising or consisting of one or more oxanilide compounds A2 according to formula (I.2):

wherein R _a and R _b are independently selected from hydrogen, an alkyl group having 1 to 20, preferably 2 to 12 carbon atoms, an alkyl group having 1 to 20, preferably 2 to 12 carbon atoms and 1 An alkoxy group of up to 4, preferably 1 to 2 oxygen atoms (ie, alkoxy oxygen atoms).

The substituents R _a and/or R _b are preferably at the ortho and/or para positions. Preferably, one of the substituents R _a or R _b on each ring is not hydrogen. Preferably, one substituent R _a or R _b on each ring is hydrogen and the substituent R _a or R _b that is not hydrogen is located in an ortho position on each ring.

In a preferred embodiment, the substituent R _a or R _b on one ring is an alkyl group having 1 to 20, preferably 2 to 12, more preferably 2 to 4 carbon atoms, and in another The substituent R _a or R _b on one ring is an alkoxy group having 1 to 20, preferably 2 to 12 carbon atoms and 1 to 4, preferably 1 to 2 oxygen atoms. More preferably, the substituent R _a or R _b on one ring is methyl, ethyl or propyl, more preferably ethyl, and the substituent R _a or R _b on the other ring is C ₂ - C ₄ alkoxy, more preferably -OCH ₂ CH ₃ .

Preferred UV absorbers A comprise or consist of one or more oxanilide compounds A2 selected from compounds of the following formulas (I.2)-1 to (I.2)-7:

In a preferred embodiment, the UV absorber A is composed of one of the above-mentioned oxanilide compounds.

Preferably, the UV absorber A comprises (or consists of) the oxanilide compound A2 (N-(2-ethoxyphenyl)-N'- (2-Ethylphenyl)-oxalamide; 2-ethyl-2'-ethoxy-oxanilide, CAS-No. 23949-66-8).

Preferred oxanilide compounds suitable as constituents of UV absorber component A are described in US 5,969,014 and/or US 6,916,867. In another preferred embodiment, the UV absorber A is composed of one or more (2-hydroxyphenyl)-symmetric-triazine compounds A1 according to formula (I.2) as defined above, one or more Oxanilide compounds A2 according to formula (I.1), or comprising one or more (2-hydroxyphenyl)-symmetric-triazine compounds A1 and one or more as defined above according to formula (I.1) Mixtures of oxanilide compounds A2 according to formula (I.2) as defined above. Preferably, the ratio of the compound of formula (I.1) to the compound of formula (I.2) in the mixture thereof may be about 1:5 to 5:1, more preferably 1:2 to 2:1.

In another preferred embodiment, the UV absorber A comprises one or more (2-hydroxyphenyl)-symmetric-triazine compounds A1 as defined above according to formula (I.1), optionally present In a mixture comprising one or more oxanilide compounds A2 according to formula (I.2) as defined above. Preferably, the UV absorber A comprises at least 30% by weight, more preferably at least 40% by weight, especially at least 50% by weight, based on the total UV absorber A, of one or more compounds according to formula (I) as defined above .1) of (2-hydroxyphenyl)-symmetric-triazine compounds A1, and optionally up to 70% by weight, more preferably up to 60% by weight, in particular up to 50% by weight, based on the total UV absorber A % of one or more oxanilide compounds A2 according to formula (I.2) as defined above. It has been found that a synergistic effect is obtained on the UV stability (crack resistance) of silicon-based modified polymers (SMP) for silicon-based modified polymers comprising a stabilizer composition Comprising (2-hydroxyphenyl)-symmetric-triazine UV absorber A1 as defined above, optionally oxanilide UV absorber A2 as defined above as UV absorber A, and oligomeric hindered amine light stabilizer ( A combination of HALS) B1, optionally a phenolic antioxidant C and optionally a liquid diluent D, wherein the (2-hydroxyphenyl)-symmetric-triazine UV absorber A1 accounts for at least 50% by weight of the total amount of UV absorber A %.

Preferably, UV absorber A is used in a substantially liquid form. The UV absorber A can be liquid by itself, or can be used in combination with a liquid diluent D, preferably at least one inert organic solvent. Suitable solvents are selected from inert polar or inert non-polar organic solvents commonly used in this field. The at least one inert organic solvent constitutes the liquid diluent D according to the invention. For the purposes of the present invention, an inert solvent is at room temperature, preferably at least less than 10°C to 30°C, more preferably at least less than 0°C to 40°C, for any components A, B, C, D and/or E are chemically inert solvents, that is, at room temperature, preferably at least within the range of 10°C to 30°C, more preferably at least within the range of 0°C to 40°C, will not interact with Solvent for any chemical reaction of components A, B, C, D and/or E.

In a specific example, the UV adsorbent A is used in combination with at least one inert solvent, especially at least one inert polar organic solvent. Suitable polar solvents include ethers, glycol ethers, and especially methoxypropanol. The at least one inert polar organic solvent constitutes the liquid diluent D according to the invention.

In an alternative embodiment, the UV absorber A is mixed with, for example, at least one inert non-polar organic solvent, preferably an aliphatic or aromatic hydrocarbon, such as petroleum ether, hexane, heptane, petroleum fractions, toluene, cyclo Combination of hexane, mesitylene or xylene. The at least one inert non-polar organic solvent constitutes the liquid diluent D according to the invention.

Suitable UV absorbers A are commercially available from Clariant as Hostavin® 3206 LIQ and Hostavin® 3400 LIQ. HALS (Component B)

It was surprisingly found that the combination of UV absorber A and oligomeric hindered amine light stabilizer B1 leads to a stabilizer combination with a unique property profile, especially in terms of thermal stability, UV/weather resistance and colour. Accordingly, the stabilizer composition of the present invention comprises at least as component B a hindered amine light stabilizer (HALS) comprising at least one oligomeric hindered amine light stabilizer B1 according to formula (II)-1 as defined above.

其中R係選自氫、具有1至20個，較佳地2至12個碳原子之烷基、具有1至20個，較佳地2至12個碳原子及1至4個，較佳地1至2個氧原子(即烷氧基氧原子)之烷氧基。 Preferably, the hindered amine light stabilizer consists of one or more compounds comprising a tetramethylhexahydropyridyl group according to formula (II):

Wherein R is selected from hydrogen, alkyl having 1 to 20, preferably 2 to 12 carbon atoms, alkyl having 1 to 20, preferably 2 to 12 carbon atoms and 1 to 4, preferably An alkoxy group of 1 to 2 oxygen atoms (ie alkoxy oxygen atoms).

Preferably, the hindered amine light stabilizers (HALS) used as active B do not need to be classified as hazardous according to the current European Union regulations on Classification, Labeling and Packaging Chemical Substances (CLP).

Preferably, the hindered amine light stabilizer B is present in an amount of 40 to 80% by weight based on the total amount of components A and B in the stabilizer composition, preferably 50 to 75% by weight, more preferably 55 to 70% by weight. In a preferred embodiment, the hindered amine light stabilizer B is present in an amount of 10 to 59% by weight based on the total amount of components A, B, C, D and E in the stabilizer composition, preferably 12 to 49% by weight, more preferably 15 to 39% by weight, also preferably 20 to 35% by weight, especially 22 to 33% by weight.

Preferably, the hindered amine light stabilizer (HALS) component B comprises at most 100% by weight of at least one oligomeric hindered amine light stabilizer B1, more preferably at most 95% by weight. In addition to the oligomeric hindered amine light stabilizer B1, block B may contain other hindered amine light stabilizers. An example of a suitable hindered amine light stabilizer is 2-dodecyl-N-(2,2,6,6-tetramethyl-4-hexahydropyridyl)succinimide (CAS-No 79720- 19-7); bis(2,2,6,6-tetramethyl-4-hexahydropyridyl) sebacate (CAS-No 52829-07-9); bis(1,2, 2,6,6-Pentamethyl-4-hexahydropyridyl ester) (CAS-No 41556-26-7); bis(1-octyloxy-2,2,6,6-tetramethyl sebacate yl-4-hexahydropyridyl ester) (CAS-No 129757-67-1); 2,2,4,4-tetramethyl-7-oxa-3,20-diazabispiro-20 -(2,3-Epoxy-propyl)-bispiro-(5.1.11.2)-eicodecan-21-one (CAS-No. 64338-16-5) and mixtures thereof.

Examples of suitable oligomeric hindered amine light stabilizers B1 include 2,2,4,4-tetramethyl-7-oxa-3,20-diazabispiro-20-(2,3-epoxy Reaction product of -propyl)bispiro-(5.1.11.2)-eicodecan-21-one and epichlorohydrin (Hostavin® N30 from Clariant).

HALS B comprises at least one oligomeric hindered amine light stabilizer B1 according to formula (II)-1 as defined above. For the purposes of the present invention, the oligomeric hindered amine light stabilizer B1 consists of at least 2 repeating units, preferably ≧3 repeating units. Preferably, the oligomeric hindered amine light stabilizer B1 consists of ≤ 300 repeating units, more preferably ≤ 202 repeating units, more preferably ≤ 22 repeating units, especially ≤ 12 repeating units.

More preferably, the hindered amine light stabilizer B consists of a mixture of oxadiaza-spirodecane compounds according to formulas (II)-1 and (II)-2 and optionally (II)-3 as defined below.

其中 n及m彼此獨立地為0至100，較佳地0至10，更佳地0至5的數字，其先決條件為n和m不皆為0； R ₁係氫、具有5至7個碳原子的環烷基、或具有1至12個碳原子的烷基； R ₂及R ₃係彼此獨立地選自氫、具有1至18個碳原子的烷基、或與彼等所連接的碳原子一起為5至13員環烷基環或與彼等所連接的碳原子一起為式(II)-4的基團：

其中R ₁係如上所定義；及 R ₄及R ₅係彼此獨立地選自氫、具有1至22個碳原子的烷基、氧基O*、-OH、-NO、-CH ₂CN、苯甲基、烯丙基、具有1至30個碳原子的烷氧基、具有5至12個碳原子的環烷氧基、具有6至10個碳原子的芳氧基，其中該芳基可另外經取代、具有7至20個碳原子的芳烷氧基，其中該芳基可另外經取代、具有3至10個碳原子的烯基、具有3至6個碳原子的炔基、具有1至10個碳原子的醯基、鹵素、未經取代之苯基或經C ₁-C ₄-烷基取代之苯基。 In a preferred embodiment, the hindered amine light stabilizer B is at least one formula ( II)-1 compound, 5 to 35% by weight, preferably 5 to 20% by weight, more preferably 5 to 12% by weight, based on component B, of at least one compound of formula (II)-2 and 0 to 10% by weight, preferably 1 to 5% by weight, more preferably 1 to 3% by weight of at least one compound of formula (II)-3 based on part B constitutes:

Wherein n and m are independently 0 to 100, preferably 0 to 10, more preferably 0 to 5 numbers, the prerequisite for which is that n and m are not all 0; R ₁ is hydrogen, with 5 to 7 A cycloalkyl group of carbon atoms, or an alkyl group with 1 to 12 carbon atoms; R ₂ and R ₃ are independently selected from hydrogen, an alkyl group with 1 to 18 carbon atoms, or an alkyl group connected to them The carbon atoms together are a 5 to 13 membered cycloalkyl ring or together with the carbon atoms to which they are attached a group of formula (II)-4:

wherein R ₁ is as defined above; and R ₄ and R ₅ are independently selected from hydrogen, alkyl having 1 to 22 carbon atoms, oxy O*, -OH, -NO, -CH ₂ CN, benzene Methyl, allyl, alkoxy having 1 to 30 carbon atoms, cycloalkoxy having 5 to 12 carbon atoms, aryloxy having 6 to 10 carbon atoms, wherein the aryl can be additionally Substituted, aralkyloxy groups having 7 to 20 carbon atoms, wherein the aryl group may be additionally substituted, alkenyl groups having 3 to 10 carbon atoms, alkynyl groups having 3 to 6 carbon atoms, alkynyl groups having 1 to 6 carbon atoms Acyl of 10 carbon atoms, halogen, unsubstituted phenyl or C ₁ -C ₄ -alkyl substituted phenyl.

Preferably, the stabilizer composition of the present invention comprises the hindered amine light stabilizer B shown above, and the hindered amine light stabilizer B is calculated from 65 to 95% by weight based on component B, preferably 75 to 95% by weight. 94% by weight, preferably 85 to 95% by weight of at least one compound of formula (II)-1, based on component B, 5 to 35% by weight, preferably 5 to 20% by weight, more preferably 5% by weight to 12% by weight of at least one compound of formula (II)-2 and 0 to 10% by weight, preferably 1 to 5% by weight, more preferably 1 to 3% by weight of at least one compound of formula (II)-2 based on component B (II)-3 compounds constitute, wherein n and m are independently 0 to 100, preferably 0 to 10, more preferably 0 to 5 numbers, and the prerequisite is that n and m are not all 0; R ₁ is hydrogen, cycloalkyl having 5 to 7, preferably 6 carbon atoms, or alkyl having 1 to 12, preferably 1 to 6 carbon atoms; R ₂ and R ₃ are independently of each other selected from hydrogen, alkyl groups having 1 to 18 carbon atoms, or together with the carbon atoms to which they are attached 5 to 13 membered cycloalkyl rings or together with the carbon atoms to which they are attached are of the formula as defined above (II) a group of -4; and R ₄ and R ₅ are independently selected from hydrogen, an alkyl group having 1 to 22 carbon atoms, an oxygen group O*, -OH, -NO, -CH ₂ CN, Benzyl, allyl, alkoxy having 1 to 30 carbon atoms, cycloalkoxy having 5 to 12 carbon atoms, aryloxy having 6 to 10 carbon atoms, wherein the aryl can Additionally substituted, aralkoxy having 7 to 20 carbon atoms, wherein the aryl group may be additionally substituted, alkenyl having 3 to 10 carbon atoms, alkynyl having 3 to 6 carbon atoms, having 1 Acyl group of up to 10 carbon atoms, halogen, unsubstituted phenyl or phenyl substituted by C ₁ -C ₄ -alkyl.

Preferred embodiments of stabilizer component B are mixtures of compounds according to formula (II)-1, (II)-2 and optionally (II)-3, such as described in US 6,174,940 and/or US 2005/0228086 . The substituents R ₁ to R ₅ and subscripts n and m of formulas (II)-1 to (II)-4 refer to the corresponding substituents and subscripts defined in US 6,174,940.

Preferably, HALS component B consists of compounds according to formulas (II)-1 and (II)-2 and optionally (II)-3, wherein the substituents R ₁ to R ₅ have the same definition.

Preferably, HALS component B consists of compounds according to formulas (II)-1 and (II)-2 and optionally (II)-3, wherein n and m are independently of each other from 0 to 10, more preferably 0 The number to 5, its prerequisite is that n and m are not all 0; R ₁ is hydrogen, a cycloalkyl group with 6 carbon atoms, or an alkyl group with 1 to 4 carbon atoms; R ₂ and R ₃ are each independently selected from hydrogen, an alkyl group having 1 to 6 carbon atoms, or a 6 to 12 membered cycloalkyl ring together with the carbon atoms to which they are attached, or together with the carbon atoms to which they are attached is of the formula (II) a group of -4; and R ₄ and R ₅ are independently selected from hydrogen, an alkyl group having 1 to 5 carbon atoms, an oxygen group O*, -OH, -NO, -CH ₂ CN, Benzyl, allyl, alkoxy having 1 to 10 carbon atoms, cycloalkoxy having 5 to 6 carbon atoms, aryloxy having 6 to 7 carbon atoms, wherein the aryl can Additionally substituted, aralkoxy having 7 to 10 carbon atoms, wherein the aryl group may be additionally substituted, alkenyl having 3 to 6 carbon atoms, alkynyl having 3 to 6 carbon atoms, having 1 Acyl of up to 4 carbon atoms, halogen, unsubstituted phenyl or C ₁ -C ₂ -alkyl substituted phenyl.

More preferably, HALS component B consists of compounds according to formulas (II)-1 and (II)-2 and optionally (II)-3, wherein n and m are independently of each other a number from 0 to 5, which presupposes with the proviso that n and m are not both 0; R is an alkyl group having ₁ to ₄ carbon atoms, more preferably methyl; R and _R together with the carbon atoms to which they are attached are a 6 to 12 membered ring An alkyl ring, preferably a 12-membered cycloalkyl ring, or a group of formula (II)-4 together with the carbon atoms to which they are attached; R ₄ and R ₅ are independently selected from hydrogen, having 1 An alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a cycloalkoxy group having 5 to 6 carbon atoms, and an acyl group having 1 to 4 carbon atoms.

Preferably, the substituents R ₁ in formulas (II)-1 to (II)-4 are independently hydrogen or an alkyl group having 1 to 4 carbon atoms, more preferably all substituents R ₁ are methyl base.

Preferably, the substituents R ₂ and R ₃ in formulas (II)-1 to (II)-3 together with the carbon atoms to which they are attached are 12-membered cycloalkyl rings.

Preferably, the substituents R ₄ and R ₅ in formulas (II)-1 to (II)-4 are independently selected from hydrogen, methyl, acetyl, octyloxy or cyclohexyloxy.

In a preferred embodiment, HALS component B consists of compounds according to formulas (II)-1 and (II)-2 and optionally (II)-3, wherein n and m are independently of each other from 0 to 10, more Preferably a number from 0 to 5, provided that n and m are not both 0; R ₁ is methyl; R ₂ and R ₃ together with the carbon atoms to which they are attached are a 12-membered cycloalkyl ring, and R ₄ is hydrogen.

In a more preferred embodiment, the hindered amine light stabilizer B consists of 85 to 95% by weight of at least one compound of formula (II)-1 based on component B, and 5 to 12% based on component B. % by weight of at least one compound of formula (II)-2 and 1 to 3% by weight of at least one compound of formula (II)-3 based on component B, wherein n and m are independently of each other from 0 to 10, more preferably a number from 0 to 5, provided that n and m are not both 0; R ₁ is methyl; R ₂ and R ₃ together with the carbon atoms to which they are attached are 12-membered cycloalkyl rings , and R ₄ is hydrogen.

Typically, the oligomeric HALS component B1 has a (weight average) molecular weight of greater than 540 g/mol, preferably greater than 1,000 g/mol, especially greater than 1,500 g/mol. Preferably, the (weight average) molecular weight of the oligomeric HALS component B1 is ≤ 20.000 g/mol, preferably ≤ 18.000 g/mol, more preferably ≤ 17.000 g/mol. The (weight average) molecular weight of the oligomeric HALS fraction B1 was determined by gel permeation chromatography (GPC) using a mixture of tetrahydrofuran and ethanolamine as solvent and polystyrene with a molecular weight of 17.670 g/mol as standard.

Stabilizer component B is a mixture of oxadiazaspirodecane compounds according to formulas (II)-1 and (II)-2 and optionally (II)-3 as defined above, which stabilizer component B is It is preferably obtained by reacting polyalkyl-1-oxadiazaspirodecane with epihalogenohydrin, especially epichlorohydrin. The preparation of suitable stabilizers B is described, for example, in US 4,340,534 and/or US 2005/228086.

其中基團R ₁、R ₂、R ₃及R ₄係如上所定義，且R ₆為主族(V)、(VI)或(VII)元素之質子酸的陰離子，特別是氯陰離子；

其中Hal是鹵素，被理解為意指氯、溴或碘原子，較佳地氯。 In particular, the mixture of oxadiaza-spirodecane compounds according to (II)1, (II)-2 and (II)-3 is obtained by combining a compound of general formula (II)-5 with formula (II) The epihalohydrin reaction of -6 is obtained:

wherein the groups R ₁ , R ₂ , R ₃ and R ₄ are as defined above, and R ₆ is an anion of a protonic acid of an element of group (V), (VI) or (VII), especially a chloride anion;

Where Hal is halogen, it is understood to mean chlorine, bromine or iodine atom, preferably chlorine.

Typically, compounds of formula (II)-3 are constructed in a first step, followed by heating of the reaction mixture resulting in the formation of compounds of formula (II)-1 and (II)-2. Preferably, compounds (II)-5 and (II)-6 react at a molar ratio of 1:1 to 1:2.9; preferably 1:1 to 1:2.7, especially 1:2 to 1:2.5 . In particular, the reaction is carried out in an inert organic solvent in the presence of 4 to 20 times the molar amount of alkali metal hydroxide relative to the molar amount of the compound of formula (II)-5. Typically, the reaction temperature is in the range of 20 to 220°C, preferably 40 to 120°C, especially 60 to 90°C.

Preferred inert organic solvents are aliphatic or aromatic hydrocarbons, such as petroleum ether, hexane, heptane, petroleum fractions, toluene, cyclohexane, mesitylene or xylene. Particularly preferred are aromatic hydrocarbons, especially xylene. Relative to compound (II)-5, the inert organic solvent is preferably used in a weight ratio of 2:1 to 1:5, more preferably 2:1 to 1:3, especially 2:1 to 1:2.

Typically, a phase transfer catalyst is used in the reaction. For example, the used phase transfer catalyst (phase transfer catalyst) is relative to the amount of the compound of formula (II)-5, the quantitative ratio is 1.5 to 10% by weight, preferably 3 to 7% by weight, especially 4 to 6% by weight of polyethylene glycol, preferably polyethylene glycol with a certain average degree of oligomerization, especially polyethylene glycol 200. For example, the phase transfer catalyst used may be a quaternary ammonium halide, such as trioctylmethylammonium chloride, especially in a quantitative proportion of 0.1 to 5% by weight relative to compound (II)-5.

The reaction of compounds (II)-5 and (II)-6 is generally completed after 30 to 60 minutes. Immediately after the reaction, excess epihalohydrin is removed from the reaction mixture, preferably by distillation. The organic and aqueous phases are separated; the organic phase is washed with water and freed of the inert organic solvent, preferably by distillation. The mixture obtained can be converted, without further purification steps, by heating at 100 to 240° C., preferably at 120 to 220° C., especially at 150 to 200° C., preferably under reduced pressure, into Desired mixtures of formulas (II)-1, (II)-2 and (II)-3.

By changing the amount of compound of formula (II)-5, the amount of epihalohydrin (II)-6, the amount of alkali metal hydroxide and the amount of phase transfer catalyst, component (II)-1 can be adjusted , (II)-2 and the composition of the mixture of (II)-3. The composition of the mixture of components (II)-1, (II)-2 and (II)-3 can be revealed by customary spectroscopic methods (IR and ¹³ C-NMR spectroscopy).

In a particularly preferred embodiment, HALS component B comprises (or preferably consists of:) 2,2,4,4-tetramethyl-7-oxa-3,20-diazabispiro- The reaction product of 20-(2,3-epoxy-propyl)bispiro-(5.1.11.2)-21-21-one and epichlorohydrin. The aforementioned reaction products are typically obtained as described above. Preferably, the aforementioned reaction product is prepared by making 2,2,4,4-tetramethyl-7-oxa-3,20-diazabispiro-20-(2,3-epoxy-propane Base) dispiro-(5.1.11.2)-21-21-one and epichlorohydrin at a molar ratio of 1:2 to 1:2.5 in the molar amount of alkali metal hydroxide relative to 2 ,2,4,4-Tetramethyl-7-oxa-3,20-diazabispiro-20-(2,3-epoxy-propyl)bispiro-(5.1.11.2)- Hecodecan-21-one is obtained by using a phase transfer catalyst reaction in an inert organic solvent in the presence of 4 to 20 times the molar amount. Phenolic Antioxidants (Component C)

It was surprisingly found that the addition of phenolic antioxidants in combination with UV absorber A and HALS B leads to a further synergistic improvement of the stabilizer combination, especially from the standpoint of thermal stability, UV/weather resistance and color come and see.

Preferably, antioxidant C is present in an amount of 1 to 50% by weight, preferably 1 to 30% by weight, more preferably 1 to 25% by weight, based on the total stabilizer composition comprising components A, B and C % by weight, also preferably 2 to 17% by weight, especially 5 to 16% by weight. If there are optional components D and E in the stabilizer composition, the presence of antioxidant C is preferably based on the total stabilizer composition comprising components A, B, C, D and E, ranging from 1 to 50% by weight, preferably 1 to 20% by weight, more preferably 1 to 15% by weight, also preferably 2 to 10% by weight, especially 3 to 9% by weight.

其中Z ₁和Z ₂係彼此獨立地選自氫、具有1至18個，較佳地1至10個碳原子的烷基、苯基及具有5至8個碳原子的環烷基； X    係選自-O-(CH ₂) _q-O-；-(OCH ₂-CH ₂) _q-O-； -O-(CH ₂) _q-S-(CH ₂) _q-O；-NH-(CH ₂) _q-NH-；-NH-NH-，其中q為1至12，較佳地1至6之整數，或以下基團：

p    係0或1至6，較佳地1至4之整數。 The stabilizer composition of the present invention comprises an antioxidant as component C, wherein the antioxidant consists of one or more phenolic compounds according to formula (III)a and/or (III)b as shown above, wherein R _x and R _y is independently selected from hydrogen, halogen or an alkyl group having 1 to 10, preferably 1 to 6, more preferably 1 to 4 carbon atoms; R _z is selected from hydrogen or has 1 to 10 carbon atoms, preferably 1 to 6, more preferably an alkyl group of 1 to 4 carbon atoms; _R is selected from hydroxyl, alkoxy having 1 to 18 carbon atoms, and alkyl having 1 to 4 A phenylalkoxy radical with carbon atoms, a cycloalkoxy radical with 5 to 8 carbon atoms or a group of formula (III)c

wherein Z and Z are independently selected from _hydrogen , alkyl having ₁ to 18, preferably 1 to 10 carbon atoms, phenyl and cycloalkyl having 5 to 8 carbon atoms; X is -O-(CH ₂ ) _q -O-; -(OCH ₂ -CH ₂ ) _q -O-; -O-(CH ₂ ) _q -S-(CH ₂ ) _q -O; -NH-( CH ₂ ) _q -NH-; -NH-NH-, wherein q is an integer of 1 to 12, preferably 1 to 6, or the following groups:

p is 0 or an integer of 1-6, preferably 1-4.

Preferred embodiments of the phenolic antioxidant compound C used in the stabilizer composition of the present invention do not include amine groups.

Preferably, R _x and R _y are independently selected from branched alkyl groups having 1 to 10, preferably 1 to 6, more preferably 1 to 4 carbon atoms. More preferably, one or both of R _x and R _y is tertiary butyl.

Preferably, X is a group derived from -O-(CH ₂ ) _q -O-, wherein q is an integer of 1 to 12, preferably 2 to 6, more preferably 2 to 4.

其中取代基及下標係如上文對式(III)a及(III)b所述。 In a preferred embodiment, antioxidant C consists of one or more phenolic compounds according to formula (III)a' and/or (III)b':

Wherein the substituents and subscripts are as described above for formulas (III)a and (III)b.

In a preferred embodiment, the antioxidant C comprises (or preferably consists of:) a phenolic compound according to formula (III)b or preferably (III)b', wherein R _x and R _y are independent of each other is selected from branched alkyl groups having 1 to 6, more preferably 1 to 4 carbon atoms, more preferably one or both of R _x and R _y is a tertiary butyl group; R _z is selected from hydrogen or having An alkyl group of 1 to 4 carbon atoms; X is selected from -O-(CH ₂ ) _q -O-, wherein q is an integer of 2 to 4; and p is an integer of 1 to 4.

In a preferred embodiment, the antioxidant C comprises (or preferably consists of:) bis-(3,3-bis-(4'-hydroxy-3'-tertiary butyl-phenyl)butanoic acid) - Glycol esters (CAS No. 32509-66-3).

In a preferred embodiment, the antioxidant C comprises (or preferably consists of:) a phenolic compound according to formula (III)-1; bis-(3,3-bis-(4'-hydroxyl-3' - tertiary butyl-phenyl)butanoic acid)-ethylene glycol ester (CAS No. 32509-66-3).

Preferred specific examples of antioxidant component C are also described in US 6,270,692 and/or GB1440391.

In a preferred embodiment of the stabilizer composition of the present invention, the UV absorber A comprises (or preferably consists of:) (2- Hydroxyphenyl)-symmetry-triazine compound and/or the oxanilide compound according to formula (I.2)-1, and antioxidant C comprises (or preferably is made up of following:) phenolic compound bis-(3 , 3-bis-(4'-hydroxy-3'-tertiary butyl-phenyl)butanoic acid)-ethylene glycol ester.

In a more preferred embodiment of the stabilizer composition of the present invention, the UV absorber A comprises (or preferably consists of:) the oxalanilide compound according to the formula (I.2)-1 and/or according to the formula ( The (2-hydroxyphenyl)-symmetric-triazine compound of I.1)-1 and/or (I.1)-2, the hindered amine light stabilizer B comprises (or preferably consists of:) 2, 2,4,4-Tetramethyl-7-oxa-3,20-diazabispiro-20-(2,3-epoxy-propyl)bispiro-(5.1.11.2)-di The reaction product of undecane-21-one and epichlorohydrin, and the antioxidant C comprises (or preferably consists of:) phenolic compound bis-(3,3-bis-(4'-hydroxyl-3 '-tertiary butyl-phenyl)butanoic acid)-ethylene glycol ester. Liquid Diluent (Component D)

To provide the stabilizer composition of the present invention in preferably liquid form, liquid components A and/or B and optionally C may be used. However, it may be more convenient to provide a liquid stabilizer composition by adding a liquid diluent as Component D, which preferably acts on the components of the stabilizer composition, particularly components A, B and optionally C is chemically inert. Accordingly, the stabilizer composition of the present invention may comprise as component D one or more liquid diluents. Preferably, at least one liquid diluent D is present in an amount of 30 to 79% by weight, preferably 35 to 69% by weight, based on the total stabilizer composition comprising components A, B, optionally C, E and D % by weight, more preferably 40 to 64% by weight, also preferably 40 to 55% by weight, especially 43 to 53% by weight. The amount is suitably selected to provide a substantially liquid stabilizer composition in the form of a solution, dispersion, emulsion, suspension or paste, preferably a suspension.

Preferably, the liquid diluent D can be selected from a suitable liquid diluent, such as a suitable solvent, a liquid adjuvant or a mixture thereof. Preferably, at least one liquid diluent D is selected from chemically inert solvents and liquid additives, which can be optionally present (or typically present) in the polymer composition based on silicon-modified polymer (SMP) .

In a preferred embodiment, the stabilizer composition comprises 35 to 69% by weight, preferably 40 to 64% by weight, more preferably 40 to 55% by weight, especially 43 to 55% by weight, based on the total stabilizer composition. 53% by weight of at least one liquid diluent D selected from liquid auxiliaries and/or liquid solvents of the liquid diluent D.

In a preferred embodiment, the stabilizer composition comprises at least one liquid additive and/or liquid solvent that can be present in a silicon-based modified polymer (SMP)-based polymer composition as a liquid diluent D, preferably Contains at least one liquid diluent D used as an auxiliary in polymer compositions based on silicon-modified polymers (SMP).

More preferably, the stabilizer composition comprises at least one liquid diluent D selected from liquid plasticizer D1, liquid adhesion promoter D2, liquid catalyst D3, moisture scavenger D4 and liquid solvent D5.

The preferred liquid plasticizer D1 is selected from phthalate plasticizers, such as dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diphthalate Heptyl phthalate, Dioctyl phthalate, Diisononyl phthalate, Diisodecyl phthalate, Diisoundecyl phthalate, Butylbenzyl phthalate, Dilauryl phthalate and dicyclohexyl phthalate; epoxidized plasticizers, such as epoxidized soybean oil, epoxidized linseed oil, and epoxidized benzyl stearate; fatty acid esters, such as C Alkyl and phenyl esters of ₄ -C ₂₈ fatty acids, chlorinated paraffin, etc.

The plasticizer D1 can be one or a combination of two or more of the above plasticizers.

Preferably, the plasticizer D1 does not contain phthalate compounds. Preferably, the plasticizer D1 comprises (or preferably consists of) at least one phenyl C ₁₀ -C ₂₁ alkanesulfonate (commercially available for example under the trade name Mesamoll ^® from Lanxess).

Preferably, at least one adhesion promoter D2 is selected from silane compounds having at least one additional functional group, such as amino, mercapto, epoxy, carboxyl, vinyl, isocyanato, isocyanuric Acid groups, halogens, etc. Typically, the adhesion promoter D2 is selected from epoxy silanes and amino silanes.

For example, the adhesion promoter D2 can be selected from: Silanes containing isocyanato groups such as γ-isocyanatopropyltrimethoxysilane, γ-isocyanatopropyltriethoxysilane, γ-isocyanatopropylmethyldiethoxysilane and γ-isocyanatopropylmethyldimethoxysilane; Amino-containing silanes, for example selected from γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyl Diethoxysilane, γ-(2-aminoethyl)aminopropyltrimethoxysilane, γ-(2-aminoethyl)aminopropylmethyldimethoxysilane, γ-(2-aminoethyl) base) aminopropyltriethoxysilane, γ-(2-aminoethyl)aminopropylmethyldiethoxysilane, γ-ureidopropyltrimethoxysilane, N-phenyl-γ-amine Propyltrimethoxysilane, N-benzyl-γ-aminopropyltrimethoxysilane and N-vinylbenzyl-γ-aminopropyltriethoxysilane; Silanes containing mercapto groups, such as γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-mercaptopropylmethyldimethoxysilane and γ-mercaptopropylmethyldiethoxysilane base silane; Silanes containing epoxy groups, such as γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-glycidoxypropylmethyl dimethyl Oxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and β-(3,4-epoxycyclohexyl)ethyltriethoxysilane; Carboxysilanes, such as β-carboxyethyltriethoxysilane, β-carboxyethylphenylbis-(2-methoxyethoxy)silane and N-β-(carboxymethyl)aminoethyl- γ-Aminopropyltrimethoxysilane; Halogen-containing silanes, such as γ-chloropropyltrimethoxysilane; and Isotrimeric isocyanate silanes such as tris(trimethoxysilyl isocyanurate).

In a preferred embodiment, the at least one adhesion promoter D2 is selected from amine-containing silanes, especially amine-containing trimethoxysilane. Preferably, the at least one adhesion promoter D2 comprises at least one amino-containing trimethoxysilane, preferably 3-aminopropyltrimethoxysilane (eg Dynasylan® AMMO from Evonik).

In a preferred embodiment, the at least one D3 is selected from known silanol condensation catalysts. The condensation catalyst can be, for example, tetravalent tin compounds such as dibutyltin dilaurate, dibutyltin diacetate, dibutyltin; divalent tin compounds such as stannous octoate; titanates such as tetrabutyl titanate and tetrapropyl titanate ; Amine compounds such as butylamine, octylamine, laurylamine, dibutylamine, monoethanolamine, diethanolamine, triethanolamine, diethylenetriamine, triethylenetetramine, cyclohexylamine, benzylamine, diethylamine Aminopropylamine, xylylenediamine, 2,4,6-tris(dimethylaminomethyl)phenol, morpholine, N-methylmorpholine and 1,8-diazepine Bicyclo[5.4.0]undecene-7 (DBU); amino-containing silane coupling agents such as γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)aminopropylmethyl base-dimethoxysilane; other silanol condensation catalysts, and other known silanol condensation catalysts such as acidic catalysts and basic catalysts.

The catalyst D3 can be one or a combination of two or more of the above catalysts.

Preferably, the at least one catalyst D3 is selected from metal organic compounds based on tetravalent titanium (such as diisopropoxytitanium bisacetylacetonate) and/or organic compounds based on tetravalent tin (such as diacetyl dialkyltin pyruvate and dialkyltin phthalate). Such catalysts are commercially available, for example, from TIB Chemicals. Preferably, the catalyst D3 comprises at least one organotin compound, more preferably dibutyltin bisacetylpyruvate and/or dioctyltin bisacetylpyruvate (eg TIB KAT® 223 from TIB Chemicals, diketone dioctyltin acid).

Preferably, the moisture scavenger D4 is selected from liquid vinyl silanes, especially silanes containing vinyl unsaturated groups, such as vinyl trimethoxysilane (VTMO), vinyl triethoxysilane (VTEO) , γ-methacryloxypropyl-methyldimethoxysilane and γ-acryloxypropylmethyltriethoxysilane. For example, the moisture scavenger D4 is vinyltrimethoxysilane (VTMO) (eg Dynasylan ^® VTMO from Evonik) and/or vinyltriethoxysilane (VTEO) (eg Dynasylan ^® VTEO from Evonik). In a particularly preferred embodiment of the invention, the liquid diluent D comprises (or consists of:) at least one moisture scavenger D4, more preferably vinyltrimethoxysilane (VTMO) (eg Dynasylan ^® VTMO from Evonik) And/or vinyltriethoxysilane (VTEO) (eg Dynasylan ^® VTEO from Evonik), most preferably vinyltrimethoxysilane (VTMO).

Preferably, the solvent D5 is selected from inert polar or inert non-polar organic solvents commonly used in the art.

In a specific example, the stabilizer composition comprises at least one inert solvent, especially at least one inert polar solvent. Suitable polar solvents include ethers, glycol ethers, especially methoxypropanol.

In alternative embodiments, the stabilizer composition may comprise an inert non-polar organic solvent, preferably an aliphatic or aromatic hydrocarbon such as petroleum ether, hexane, heptane, petroleum fractions, toluene, cyclohexane, mesitylene or xylene.

In one embodiment of the invention, the stabilizer composition may be free of substantial amounts of solvents that may be harmful to health and/or the environment. In particular, the classification requirements for stabilizer compositions may not contain substantial amounts of solvents, which must be classified as hazardous according to the current European Union Regulation on Classification, Labeling and Packaging of Chemical Substances (CLP). According to an aspect of the present invention, the stabilizer composition may not contain substantial amounts of aromatic solvents, such as toluene, mesitylene or xylene. In one embodiment of the invention, the stabilizer composition does not contain a substantial amount of toluene. In one embodiment of the present invention, the stabilizer composition does not contain a substantial amount of mesitylene. In one embodiment of the invention, the stabilizer composition does not contain a substantial amount of xylene. For the purposes of the present invention, the expression "substantial amount" is to be understood as an amount of ≧1% by weight, based on the total stabilizer composition.

In a preferred embodiment of the present invention, the liquid diluent D comprises (or consists of:) a mixture selected from at least one liquid plasticizer D1, at least one liquid moisture scavenger D4, at least one liquid solvent D5 and the above-mentioned compounds at least one of the components.

In another preferred embodiment, the liquid diluent D comprises (or consists of:) selected from at least one liquid moisture scavenger D4, especially vinyltrimethoxysilane; at least one liquid solvent D5, especially methoxysilane; propanol and/or xylene; and at least one component of a mixture of the aforementioned compounds. Other additives (component E)

The stabilizer composition of the present invention may further comprise one or more other additives E as optional components, such as commonly used additives for stabilizer compositions and SMP sealants and adhesives.

Preferably, the at least one additive E is present in an amount of 0 to 50% by weight, preferably 0 to 20% by weight, more preferably 0.01 to 20% by weight, also preferably 0.01 to 10% by weight, preferably 0.1 to 1% by weight.

Other additives E can be selected from common additives, such as antistatic agents, flame proofing agents, softeners, nucleating agents, metal deactivators, biocides, impact modifiers (impact modifier), filler, pigment and fungicide (fungicide), biocide. Furthermore, one or more of the above-mentioned additives can be used as the following additive G in the stabilizer composition of the present invention, and the prerequisite is that the additive E is different from the liquid diluent D. Method for preparing stabilizer composition

The invention also relates to a process for the preparation of the stabilizer composition of the invention, wherein components A, B, and optionally C, D and/or E are mixed together. In particular, the mixing step can be achieved by mixing components A, B, and optionally Proceed with C, D and/or E.

Preferably, the method for preparing the stabilizer composition of the present invention may comprise the step of grinding one or more of components A, B, and optionally C, D and/or E. Thereafter, components A, B, and optionally C, D and/or E may be mixed together. Preferably, the stabilizer composition is obtainable, eg by a grinding step (eg micronisation), in the form of a suspension comprising solid particles with a particle size _d50 in the range of 10 to 1000 μm. The milling step breaks up aggregates and improves the uniform distribution of the non-liquid components A, B and optionally C and E.

In another embodiment, the method for preparing the stabilizer composition of the present invention comprises the step of dissolving at least one solid component selected from components A, B and optional C and/or E in a liquid, wherein the liquid It may be the at least one liquid diluent D or one or more of components A, B, C or E in liquid form. For example, one or more of the components A, B, C or E may be provided in dispersed or dissolved form, for example in combination with the liquid diluent D, and thereafter mixed with the other components of the stabilizer composition.

Furthermore, the present invention relates to the use of the stabilizer composition of the present invention as a stabilizer in a silicon-based modified polymer-based sealant or adhesive. In particular, the stabilizer compositions of the present invention are used to improve the UV and thermal stability of sealants or adhesives based on silicon-modified polymers, i.e. against mechanical and/or thermal stresses from exposure to UV radiation and/or heat. or degradation of optical surface properties. polymer composition

Furthermore, the present invention relates to a silicon-based modified polymer (SMP)-based polymer composition, which includes the stabilizer combination of the aforementioned UV absorber A, hindered amine light stabilizer B and phenolic antioxidant C. The present invention relates to a polymer composition, which comprises: (P) at least one polymer P selected from silicon-based modified polymers; (S) A stabilizer combination S consisting of: at least one UV absorber A; at least one hindered amine light stabilizer B; Optionally at least one phenolic antioxidant C; optionally at least one liquid diluent D; and Optionally at least one other additive E; Wherein the components A, B, C, D and E are the same as those defined for the stabilizer composition of the present invention; (F) optionally at least one filler F; (G) optionally at least one other additive G, preferably selected from plasticizer G1, adhesion promoter G2, catalyst G3 and moisture scavenger G4.

In a preferred embodiment, the present invention relates to a polymer composition comprising (or preferably consisting of): (P) Based on the total polymer composition, 5 to 99% by weight, preferably 10 to 80% by weight, more preferably 15 to 40% by weight of at least one polymer P selected from silicon-based modified polymers ; (S) A stabilizer combination S consisting of: 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight of at least one UV absorber A, based on the total polymer composition; 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight of at least one hindered amine light stabilizer B, based on the total polymer composition; 0 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight of at least one phenolic antioxidant C, based on the total polymer composition; 0 to 3% by weight, preferably 0.01 to 2% by weight, more preferably 0.1 to 1.6% by weight of at least one liquid diluent D, based on the total polymer composition; and 0 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight of at least one other additive E, based on the total polymer composition; (F) 0 to 85% by weight, preferably 0 to 80% by weight, more preferably 1 to 70% by weight, based on the total polymer composition, of at least one filler F, preferably selected from calcium carbonate; (G) Based on the total polymer composition, 0 to 35% by weight, preferably 0 to 33% by weight, more preferably 1 to 30% by weight of at least one other additive G, preferably selected from plastic Chemical agent G1, adhesion promoter G2, catalyst G3 and moisture scavenger G4.

Where optional components F and/or G are present, the amount of component P can be adjusted so that the sum of the amounts is or does not exceed 100% by weight. If the liquid diluent D comprises a liquid diluent D which is also the active ingredient of the additive G, the amount of G can be reduced accordingly to maintain the total amount of the additive within the above range.

The preferred embodiments of the above components A, B, C and D are also applicable to the polymer composition of the present invention.

In a preferred embodiment, the polymer composition comprises (or preferably consists of): (P) Based on the total polymer composition, 7.5 to 95% by weight, preferably 12.5 to 72% by weight, more preferably 17 to 57% by weight of at least one polymer P selected from silicon-based modified polymers ; (S) A stabilizer combination S consisting of: 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight of at least one UV absorber A, based on the total polymer composition; 0.001 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.1 to 0.8% by weight of at least one hindered amine light stabilizer B, based on the total polymer composition; 0 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight of at least one phenolic antioxidant C, based on the total polymer composition; 0 to 3% by weight, preferably 0.01 to 2% by weight, more preferably 0.1 to 1.6% by weight of at least one liquid diluent D, based on the total polymer composition; and 0 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.05 to 0.3% by weight of at least one other additive E, based on the total polymer composition; (F) 1 to 90% by weight, preferably 20 to 80% by weight, more preferably 30 to 70% by weight of at least one filler F, based on the total polymer composition; (G1) based on the total polymer composition, 1 to 25% by weight, preferably 5 to 25% by weight, more preferably 10 to 20% by weight of at least one plasticizer as other additive G1; (G2) 0.5 to 5% by weight, preferably 0.7 to 3% by weight, more preferably 0.8 to 2% by weight, based on the total polymer composition, of at least one adhesion promoter as further additive G2; (G3) based on the total polymer composition, 0.01 to 3% by weight, preferably 0.1 to 2% by weight, more preferably 0.2 to 1% by weight of at least one catalytic further additive G3; (G4) 0.5 to 5% by weight, preferably 0.7 to 5% by weight, more preferably 0.8 to 3% by weight of at least one moisture scavenger G4; (G) Based on the total polymer composition, 0 to 10% by weight of at least one other additive G different from G1 to G4.

In a preferred embodiment, the sum of components P, S, F and G is 100% by weight, wherein especially the amount of components P and/or F can be adjusted.

In particular, the polymer composition of the present invention can be obtained using the stabilizer composition of the present invention described above. In particular, the polymer composition comprises 0.01 to 10% by weight, preferably 0.1 to 6% by weight, more preferably 0.2 to 3% by weight, especially 1.6 to 2.4% by weight, based on the total polymer composition The stabilizer composition of the present invention. Silicon modified polymer P

Typically, the silicon-based modified polymer P is selected from organic polymers having at least one, preferably two, cross-linkable hydrolyzable silicon groups, especially polyether, polyurethane and/or acrylic polymers. host. Preferably, the terminal crosslinkable hydrolyzable silicon group is the only crosslinkable hydrolyzable silicon group in the silicon-based modified polymer P.

Examples of suitable silicon-modified polymers P are the commercial products Kaneka MS Polymers ^® (eg MS Polymer ^® S203H, MS Polymer ^® S303H) or Polymer ST from Evonik, which are silicon-based modifications comprising polyether and polyurethane blocks. polymer; or polymers available from Dow Chemical Company under the trade name VORASIL ^® , which are silicon-based modified polymers with a polyurethane polymer backbone.

Polymerization processes for the preparation of silicon-based modified polymers are well known in the art and are described, for example, in US 3,971,751 and EP-A 1 288 247 .

其中 R ^Q係選自具有1至20個碳原子的烷基、具有6至20個碳原子的芳基及具有7至20個碳原子的芳烷基， Y    係羥基或可水解基團； a    係1、2或3，且若存有二或更多個基團R ^Q或Y，其可為相同或不同。 In particular, crosslinkable hydrolyzable silicon groups can be described by the following formula (PI):

Wherein R ^Q is selected from an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms and an aralkyl group having 7 to 20 carbon atoms, Y is a hydroxyl group or a hydrolyzable group; a is 1, 2 or 3, and if there are two or more groups R ^Q or Y, they may be the same or different.

For example, the hydrolyzable group Y may be selected from hydrogen, a halogen atom, an alkoxy group having 1 to 20 carbon atoms, preferably a methoxy or ethoxy group, an acyloxy group, a ketoxime group, an amino group, an acyl group Amino group, amido group, aminooxy group, mercapto group. Preferably, the hydrolyzable group Y is selected from alkoxy groups, especially methoxy and ethoxy.

The at least one silicon-modified polymer P may comprise one or more silicon-modified polyurethanes and/or silicon-modified polyurethane/polyether copolymers containing at least one crosslinkable hydrolyzable silicon group. In particular, silicon-modified urethane polymers may, for example, be derived from aromatic polyisocyanates such as toluene diisocyanate, diphenylmethane diisocyanate or xylene diisocyanate or from aliphatic polyisocyanates such as isophorone diisocyanate or hexamethylene diisocyanate) with polyols.

In a preferred embodiment, at least one silicon-based modified polymer P at least includes (or preferably consists of:) silicon-based modified polyether. Typically, the silicon-modified polyether comprises a polyether backbone modified with at least one crosslinkable hydrolyzable silicon group, more preferably two terminal crosslinkable hydrolyzable silicon groups. For example, the polyether backbone may comprise repeating units selected from polyethylene oxide, polypropylene oxide, polybutylene oxide and/or polyphenylene ether. Furthermore, the polyether may contain a urethane bond or a urea bond in the main chain. Preferably, the silicon-based modified polyether comprises polyethylene oxide repeating units in the polyether main chain, wherein preferably at least 50% by weight, preferably at least 70% by weight, more preferably at least 90% by weight of repeating units It is a repeating unit of polyethylene oxide. Preferred silicon-modified polyethers having two terminally crosslinkable hydrolyzable silicon groups are described, for example, in US 3,971,751 and US 2002/198308.

其中 Q ₁、Q ₂及Q ₃係彼此獨立地選自具有1至40個，較佳地1至20個，更佳地1至4個碳原子烷基、具有1至10個，較佳地1至4個碳原子的烷氧基，如甲氧基或乙氧基、及乙醯氧基，其先決條件為Q ₁、Q ₂及Q ₃中的至少一者為可交聯的可水解矽基，及 n ₁及n ₂彼此獨立地為0至1000，較佳地0至500，更佳地0至300的整數，其先決條件為n ₁+n ₂為至少50，較佳地至少100。 In a preferred embodiment, the silicon-based modified polymer P is selected from silicon-based modified polyethers according to the following formula (P-II):

Wherein Q ₁ , Q ₂ and Q ₃ are independently selected from alkyl groups having 1 to 40, preferably 1 to 20, more preferably 1 to 4 carbon atoms, alkyl groups having 1 to 10, preferably Alkoxy groups of 1 to 4 carbon atoms, such as methoxy or ethoxy, and acetyloxy, the prerequisite for which is that at least one of Q ₁ , Q ₂ and Q ₃ is crosslinkable and hydrolyzable Silicon base, and n ₁ and n ₂ are independently of each other an integer of 0 to 1000, preferably 0 to 500, more preferably 0 to 300, with the prerequisite that n ₁ +n ₂ is at least 50, preferably at least 100.

其中n ₃係5至1000，較佳地10至500，更佳地20至500的整數，也較佳地50至300。 In a more preferred embodiment, the silicon-based modified polymer P is selected from silicon-based modified polyethers according to the following formulas (P-III) and (P-IV):

Where n ₃ is an integer from 5 to 1000, preferably from 10 to 500, more preferably from 20 to 500, and also preferably from 50 to 300.

Preferably, the polyether backbone of the silicon-based modified polyether, for example as described in formulas (P-I) to (P-III), has a molecular weight of 500 to 30,000 g/mol, preferably 1,000 to 15,000 g/mol mol, more preferably in the range of 3,000 to 12,000 g/mol.

Preferably, one or more dimethoxysilyl-terminated polyethers (DMS MS) and/or trimethoxysilyl-terminated polyethers (TMS MS) are used as the silicon-based modified polymer P. More preferably, one or more dimethoxysilyl-terminated polyethers (DMS MS) are used as polymer P. More particularly, methyldimethoxysilyl-terminated polyethers are used.

Typically, the silicon-modified polyether used as polymer P preferably has two terminally cross-linkable hydrolyzable silicon groups with a concentration of about 1,000 to 50,000 g/mol, preferably about 5,000 to about 40,000 g/mol A molecular weight (especially a number average molecular weight) in the range of g/mol, more preferably about 8,000 to about 35,000 g/mol, more preferably about 10,000 to about 30,000 g/mol.

Typically, the silicon-modified polyether used as polymer P, preferably having two terminally cross-linkable hydrolyzable silicon groups, exhibits at about 1 to about 50 Pa s, preferably about 3 to about 40 Pa s Pa s, more preferably a viscosity in the range of about 5 to about 30 Pa s, more preferably about 7 to about 20 Pa s. Typically, viscosity is measured using a Brookfield viscosimeter. For example, the Brookfield viscosity (in mPa･s) is measured by a Brookfield DV III Ultra viscometer at 24°C±3°C and 100 rpm using a suitable spindle suitable for the viscosity range to be measured, such as selected from the Brookfield RV spindle set (Usually rotor #7). Typically, once the rotor is inserted into the sample, the measurement is started at a constant rotational speed of 100 rpm. The reported Brookfield viscosity value is the value displayed 60 seconds after the start of the measurement. In a preferred embodiment, the silicon-based modified polymer P comprises (or preferably consists of) at least one silicon-based modified polyether having two terminal methyldimethoxysilyl groups (such as Kaneka MS polymer ^® S203H and/or Kaneka MS polymer ^® S303H). Filler F

Preferably, the polymer composition of the invention comprises at least one filler F in an amount of 1 to 90% by weight, preferably 20 to 80% by weight, more preferably 20 to 80% by weight, based on the total polymer composition Preferably 30 to 70% by weight.

Preferably, the at least one filler F is selected from wood flour, walnut shell powder, rice hull powder, paper pulp, cotton sheet, mica, graphite, diatomaceous earth, pottery clay, kaolin, clay, talcum powder, silicon dioxide, hair Fumed silica, precipitated silica, silicic anhydride, quartz powder, glass beads, calcium carbonate (such as chalk), magnesium carbonate, titanium oxide, iron oxide, zinc oxide, carbon black, glass spheres, glass fibers and carbon fibers. Filler F can be one or a combination of two or more of the above fillers. Preferably, the at least one filler is selected from calcium carbonate, silicon dioxide, carbon black and combinations thereof. Suitable filler systems are also described in US 6,077,896 and EP1288247.

Preferably, the at least one filler F is calcium carbonate, in particular selected from chalk, marble, limestone, precipitated calcium carbonate (PCC), coated precipitated calcium carbonate, ground calcium carbonate (GCC) (in particular in the form of One or more calcium carbonates in chalk, marble and/or limestone based GCC) and coated calcium carbonate. For example, fatty acid coated PCC and/or GCC can be used as filler F.

Preferably, the filler F comprises (or preferably consists of): at least one calcium carbonate, in particular at least one precipitated calcium carbonate coated with a fatty acid. Additive G

In a preferred embodiment, the polymer composition of the present invention comprises at least one selected from plasticizer G1, adhesion promoter G2, catalyst G3, moisture scavenger G4 and other known additives used in SMP sealants Addition G. Preferably, the polymer composition according to the invention comprises, as additives G, at least one plasticizer G1, at least one adhesion promoter G2, at least one catalyst G3 and at least one moisture scavenger G4.

Such typical additives for SMP sealants and adhesives are described, for example, in US 6,077,896, EP-A 1288247 and US 2003/105261.

Preferably, the polymer composition of the invention comprises at least one plasticizer G1 in an amount of 1 to 25% by weight, preferably 5 to 25% by weight, based on the total polymer composition. % by weight, more preferably 10 to 20% by weight.

Preferably, the at least one plasticizer G1 is selected from phthalate plasticizers, such as dimethyl phthalate, diethyl phthalate, dibutyl phthalate, ortho Diheptyl phthalate, Dioctyl phthalate, Diisononyl phthalate, Diisodecyl phthalate, Diisoundecyl phthalate, Butyl phthalate Benzyl esters, dilauryl phthalate, and dicyclohexyl phthalate; epoxidized plasticizers, such as epoxidized soybean oil, epoxidized linseed oil, epoxidized benzyl stearate; fatty acid esters , such as alkyl and phenyl esters of C ₄ -C ₂₈ fatty acids; polyester plasticizers derived from dibasic acids and diols; polyethers, such as polypropylene glycol and its derivatives; polystyrene, such as poly - α-methylstyrene and polystyrene; polybutadiene, butadiene-acrylonitrile copolymer, polychloroprene, polyisoprene, polybutene, chlorinated paraffin, etc.

The plasticizer G1 can be one or a combination of two or more of the above plasticizers.

Preferably, the plasticizer G1 does not contain phthalate compounds. Preferably, the plasticizer G1 comprises (or preferably consists of): at least one C ₁₀ -C ₂₁ phenyl sulfonate (commercially available as Mesamoll ^® from Lanxess, for example).

Preferably, the polymer composition according to the invention comprises at least one adhesion promoter G2 in an amount of 0.5 to 5% by weight, preferably 0.7 to 3% by weight, based on the total polymer composition. % by weight, more preferably 0.8 to 2% by weight.

Preferably, the at least one adhesion promoter G2 is selected from silane compounds having at least one additional functional group, such as amino, mercapto, epoxy, carboxyl, vinyl, isocyanate, isotrimeric iso Cyanate, halogen, etc. Typically, the adhesion promoter G2 is selected from epoxy silanes and amino silanes.

For example, the adhesion promoter G2 can be selected from: Silanes containing isocyanato groups such as γ-isocyanatopropyltrimethoxysilane, γ-isocyanatopropyltriethoxysilane, γ-isocyanatopropylmethyldiethoxysilane and γ-isocyanatopropylmethyldimethoxysilane; Amino-containing silanes, for example selected from γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyl Diethoxysilane, γ-(2-aminoethyl)aminopropyltrimethoxysilane, γ-(2-aminoethyl)aminopropylmethyldimethoxysilane, γ-(2-aminoethyl) base) aminopropyltriethoxysilane, γ-(2-aminoethyl)aminopropylmethyldiethoxysilane, γ-ureidopropyltrimethoxysilane, N-phenyl-γ-amine Propyltrimethoxysilane, N-benzyl-γ-aminopropyltrimethoxysilane and N-vinylbenzyl-γ-aminopropyltriethoxysilane; Silanes containing mercapto groups, such as γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-mercaptopropylmethyldimethoxysilane and γ-mercaptopropylmethyldiethoxysilane base silane; Silanes containing epoxy groups, such as γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-glycidoxypropylmethyl dimethyl Oxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and β-(3,4-epoxycyclohexyl)ethyltriethoxysilane; Carboxysilanes, such as β-carboxyethyltriethoxysilane, β-carboxyethylphenylbis-(2-methoxyethoxy)silane and N-β-(carboxymethyl)aminoethyl- γ-Aminopropyltrimethoxysilane; Halogen-containing silanes, such as γ-chloropropyltrimethoxysilane; and Isotrimeric isocyanate silanes such as tris(trimethoxysilyl isocyanurate).

In a preferred embodiment, at least one adhesion promoter G2 is selected from amine-containing silanes, especially amine-containing trimethoxysilane. Preferably, at least one adhesion promoter G2 comprises at least one amino-containing trimethoxysilane, preferably 3-aminopropyltrimethoxysilane (eg Dynasylan ^® AMMO from Evonik).

Preferably, based on the total polymer composition, the polymer composition of the present invention comprises at least one catalyst G3 in an amount of 0.01 to 3% by weight, preferably 0.1 to 2% by weight %, more preferably 0.2 to 1% by weight.

Typically, the at least one catalyst G3 is selected from known silanol condensation catalysts. Suitable catalysts G3 are described, for example, in US6,077,896 and EP1288247.

This condensation catalyst can be, for example, a tetravalent tin compound such as dibutyltin dilaurate, dibutyltin phthalate, dibutyltin diacetylacetonate, dibutyltin diacetate, dibutyltin diethylhexanoate, dibutyltin dioctoate Butyl tin, two (methyl maleate) dibutyl tin, two (ethyl maleate) dibutyl tin, two (butyl maleate) dibutyl tin, two (isooctyl maleate) dibutyl tin, two (maleic acid) dibutyl tin Tridecylmaleate) dibutyltin, di(benzyl maleate) dibutyltin, dibutyltin maleate, dioctyltin diacetate, dioctyltin distearate, dioctyl dilaurate Tin, di(ethyl maleate) dioctyl tin, bis(isooctyl maleate) dioctyl tin, dimethoxy dibutyl tin, dinonyl phenol dibutyl tin and dibutenyl tin oxide; Sn compounds such as stannous octoate, stannous naphthenate and stannous stearate; titanates such as tetrabutyl titanate and tetrapropyl titanate; organoaluminum compounds such as aluminum triacetylpyruvate , tri(ethyl acetate) aluminum and ethyl acetate diisopropoxide; chelating compounds such as zirconium tetraacetylpyruvate and titanium tetraacetylpyruvate; lead octanoate; amine compounds such as butylamine, Octylamine, Laurylamine, Dibutylamine, Monoethanolamine, Diethanolamine, Triethanolamine, Diethylenetriamine, Triethylenetetramine, Oleylamine, Cyclohexylamine, Benzylamine, Diethylaminopropyl Baseamine, xylylenediamine, triethylenediamine, guanidine, diphenylguanidine, 2,4,6-tris(dimethylaminomethyl)phenol, morpholine, N-methylmorpholine, 2-Ethyl-4-methylimidazole and 1,8-diazabicyclo[5.4.0]undecene-7 (DBU) or salts of these amine compounds and carboxylic acids; amine compound-organotin compound reaction Products and mixtures, for example laurylamine-stannous octoate reaction products or mixtures; low molecular weight polyamide resins obtainable from excess polyamines and polybasic acids; reaction products of excess polyamines and epoxy compounds; silanes containing amine groups Coupling agents such as γ-aminopropyltrimethoxysilane and N-(β-aminoethyl)aminopropylmethyl-dimethoxysilane; silanol condensation catalysts, and other known Silanol condensation catalysts such as acid catalysts and alkaline catalysts.

The catalyst G3 can be one or a combination of two or more of the above catalysts.

Preferably, the at least one catalyst G3 is selected from metal organic compounds based on tetravalent titanium (such as diisopropoxytitanium diacetylacetonate) and/or organic compounds based on tetravalent tin (such as diacetyl dialkyltin pyruvate and dialkyltin phthalate). Such catalysts are commercially available, for example, from TIB Chemicals. Preferably, catalyst G3 comprises at least one organotin compound, more preferably dibutyltin diacetylpyruvate and/or dioctyltin diacetylpyruvate (such as TIB KAT® 223 of TIB Chemicals, diketoacid di octyl tin).

Preferably, the polymer composition of the present invention comprises at least one moisture scavenger D, based on the total polymer composition, the amount of the at least one moisture scavenger D is 0.5 to 5% by weight, preferably 0.7 to 5% by weight % by weight, more preferably 0.8 to 3% by weight.

Preferably, the moisture scavenger G4 is selected from vinyl silanes, especially silanes containing vinyl unsaturated groups, such as vinyl trimethoxy silane (VTMO), vinyl triethoxy silane (VTEO), γ-methacryloxypropyl-methyldimethoxysilane and γ-acryloxypropylmethyltriethoxysilane. For example, the moisture scavenger G4 is vinyltrimethoxysilane (VTMO) (eg Dynasylan ^® VTMO from Evonik) and/or vinyltriethoxysilane (VTEO) (eg Dynasylan ^® VTEO from Evonik).

Furthermore, the polymer composition may contain a respective appropriate amount of 0 to 10% by weight of at least other additives G, different from G1, G2, G3 and G4 and different from A, B, C and C, such as compatibilizers ), tackifier, physical property modifier, storage stability improver, metal deactivator, antiozonant, light stabilizer, heat stabilizer, phosphorus peroxide decomposer, lubricant, pigment (such as TiO ₂ and carbon black), thixotropic agents (such as polyamide wax, fumed silica, hydrogenated castor oil), foaming agents, flame retardants and antistatic agents.

Furthermore, the present invention also includes a process for preparing the polymer composition of the present invention, wherein the process comprises mixing components P and S and optionally F and/or G.

Several methods of preparing SMP encapsulants are known and described in the prior art. Typically, the production method involves mixing the above-mentioned components in an arbitrary order and kneading the resulting mixture at normal temperature or heating using a mixer, a roller, a kneader or the like. The composition can be prepared, for example, by adding compounds A, B, C, D and optionally F and G to the silicon-based modified polymer P and achieving uniform dispersion and dissolution, and adjusting conditions such as heating and stirring if necessary . Typically, the mixing of the components is carried out in known equipment, such as kneaders (planetary mixers), multishaft mixers equipped with a vacuum heating system. Furthermore, the preparation method may comprise dissolving one or more components using appropriate parts of an appropriate solvent and then mixing the solutions. A dispersion improving agent may be used if desired.

Typically, SMP polymer compositions are prepared in the absence of air and moisture and filled directly after preparation into closeable containers such as cartridges.

The polymer composition of the present invention obtained in the above manner can be used as a one-component curable composition. The curable composition can be obtained by preparing the polymer composition of the present invention in a substantially moisture-free state. This composition withstands long-term storage when stored in an airtight state, and it solidifies rapidly from the surface when exposed to atmospheric conditions.

The curable polymer composition of the present invention can be used as an elastic sealant or adhesive in the field of construction engineering and industrial applications. It can also be used as paint, adhesive, pouring filler, coating, etc.

All values provided in % refer to % by weight and all ratios provided are by weight unless otherwise indicated. The word ppm means mg/kg unless otherwise indicated.

The present invention is further illustrated by the following examples and claims. Example

Examples and comparative examples including the liquid stabilizer composition of the present invention, the powder stabilizer composition of the present invention and the control stabilizer composition were prepared. 1. Preparation of liquid stabilizer composition SC

The following stabilizer composition was prepared by mixing components A1, A2, B1 and C1 with liquid diluent D4. The stabilizer components A1, A2, B1, C1 and D4 are defined as follows. Components A1 and A2 are respectively provided as compositions comprising solvents D5.1 (1-methoxy-2-propanol) and D5.2 (xylene) constituting the total amount of liquid diluent D. All amounts listed in Tables 1 and 2 are expressed in % by weight with reference to the amount of active ingredient. The combined amount of diluent D and the individual amounts of diluents D4, D5.1 and D5.2 are expressed in % by weight based on the total weight of the respective stabilizer compositions.

Components: A1: UV absorber composition comprising 85% by weight of 2-[-4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]- 4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and 2-[4-[(2-hydroxy-3-tridecyloxypropyl)oxy] -2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine as a mixture of active ingredients and 15% by weight of 1-methoxy-2 - propanol as liquid diluent D5.1 (Hostavin® 3400 LIQ from Clariant, Frankfurt); A2: UV absorber composition comprising 80% by weight of 2-ethyl-2'-ethoxy-oxalyl Aniline (CAS-No. 23949-66-8) as active ingredient and 20% by weight xylene as liquid diluent D5.2 (Hostavin 3206 LIQ from Clariant); B1: HALS, 2,2,4,4- Tetramethyl-7-oxa-3,20-diazabispiro-20-(2,3-epoxypropyl)bispiro-(5.1.11.2)-eicosan-21-one Reaction product with epichlorohydrin, (Hostavin® N30 from Clariant, Frankfurt); C1: phenolic antioxidant, bis-(3,3-bis-(4'-hydroxy-3'-tertiary butyl- Phenyl)butyrate)-glycol ester (CAS No. 32509-66-3); D: liquid diluent, especially D4, D5.1 and D5.2; D4: liquid diluent, vinyltrimethoxysilane (Dynasylan ^® VTMO, Evonik); D5.1: Liquid diluent, 1-methoxy-2-propanol; D5.2: Liquid diluent, xylene.

The liquid stabilizer compositions SC1, SC2, SC3 and SC4 were obtained by mixing the components in the amounts listed in Table 1 at room temperature. The obtained stabilizer composition is obtained in the form of a transparent, stable liquid solution. Stabilizer compositions SC1, SC2, SC3 and SC4 are used in the preparation of the following SMP compositions. Preparation of SMP Test Samples Using Liquid Stabilizer Composition

Use SMP1 (Kaneka ^® S303H, silicon-terminated polyether) and one of the liquid stabilizer compositions SC1, SC2, SC3 or SC4 to prepare the following SMP composition, wherein the components SMP1, F1, G1, G2, G3 and G4 is described below.

The following components were used: Component P: SMP1: Kaneka MS Polymer ^® S303H, Kaneka, silicon-terminated polyether filler Component F: F1: Hakuenka ^® CCR-S10, Omya, fatty acid-coated precipitated calcium carbonate Other Component G : G1: plasticizer, Mesamoll ^® , Lanxess, C ₁₀ -C ₂₁ phenyl alkanesulfonate, G2: adhesion promoter, 3-aminopropyltrimethoxysilane (Dynasylan ^® AMMO, Evonik); G3: Catalyst TIB KAT ^® 223, TIB Chemicals, dioctyltin diketoate, G4: moisture scavenger, vinyltrimethoxysilane (Dynasylan ^® VTMO, Evonik); The stabilizer compositions SC1, SC2, SC3 and SC4 were used to prepare the examples (Example 1 to Example 4) of the present invention.

SMP測試樣品之製備 The prepared SMP compositions are summarized in Table 2.

Preparation of SMP test samples

In a 150 ml high-speed mixing cup (PP 250 ml), 52.0 g of filler F1 was added to 29.2 g of polymer SMP1 and 14.6 g of plasticizer G1. The mixture was stirred in a SpeedMixer DAC 600.1 FVZ at 2300 rpm for 30 seconds at ambient temperature. The stabilizer composition SC1, SC2, SC3 or SC3 in the amount according to Table 2 was added to the resulting mixture and stirred for a further 60 seconds at 2300 rpm. Finally, 0.9 g of adhesion promoter G2, 1.0 g of moisture scavenger G4 and 0.5 g of catalyst G3 were added to the resulting mixture and stirred at 2300 rpm for another 30 seconds.

The liquid stabilizer compositions SC1 , SC2, SC3 and SC4 were easily and accurately dosed and did not show any dust formation during the preparation of the SMP test samples. SMP test sample test

The thermal stability, surface crack resistance, and color of each sample were determined using the test methods described in Section 4 below. The test results are summarized in Table 3.

The results confirm that the SMP test sample using the liquid combination of UV absorber A1 and/or A2 of the present invention, hindered amine light stabilizer B1, phenolic antioxidant C1 and liquid diluent D meets the requirements for thermal stability and surface crack resistance High requirements (see Example 1 - Example 4). A particularly high UV stability was achieved for the SMP test samples using the stabilizer composition of the invention, wherein the ratio of UV absorber A1 to UV absorber A2 was higher than 1:1, i.e. when UV absorber A1 accounted for UV absorber The total amount is more than 50% by weight (referring to embodiment 3 and embodiment 4). On the other hand, better thermal stability is observed for stabilizer compositions comprising at least one UV absorber A2 (see Example 3 and Example 4). This also accounts for the reduced cost of the stabilizer composition, since oxanilide UV absorbers such as UV absorber A2 are cheaper compared to (2-hydroxyphenyl)-symmetric-triazine UV absorbers such as UV absorber A1 . The initial yellowness index (YI at 0 hours) did not vary significantly between samples. 2. Preparation and testing of SMP test samples with powder stabilizer composition

Several SMP test samples were prepared using a powdered stabilizer combination comprising components A, B and optionally C without liquid diluent D. Furthermore, control examples were made by preparing SMP test samples using conventional stabilizer combinations.

The following components were used: Component P: SMP1: Kaneka ^® S303H, silicon-terminated polyether stabilizer S: A3: UV absorber, 2-ethyl-2'-ethoxy-oxalyl without liquid diluent Aniline (CAS-No. 23949-66-8); B1: HALS, 2,2,4,4-tetramethyl-7-oxa-3,20-diazabispiro-20-(2, Reaction product of 3-epoxy-propyl)bispiro-(5.1.11.2)-eicosan-21-one and epichlorohydrin (Hostavin ^® N30 from Clariant); C1: phenolic antioxidant, Bis-(3,3-bis-(4'-hydroxy-3'-tertiary butylphenyl)butanoic acid)-glycol ester (CAS-No. 32509-66-3); R1: control group 1 The following combination UV-1 UV absorber, 2-(2'-hydroxy-3'-tertiary butyl-5'-methylphenyl)-5-chlorobenzotriazole (CAS-No. 3896-11- 5), and HALS-1 sebacic acid bis(2,2,6,6-tetramethyl-4-hexahydropyridyl ester) (CAS-No. 52829-07-9) R2: Control group 2 is Tinuvin ^® 5866 (from BASF), which is a mixture of UV absorbers and basic HALS, including the HALS component butylmalonate bis(1,2,2,6,6-pentamethyl-4-azacyclo hexyl)[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl ester]. Filler component F: F1: Hakuenka ^® CCR-S10, precipitated calcium carbonate coated with fatty acid Other components G: G1: Plasticizer, Mesamoll ^® , C ₁₀ -C ₂₁ phenyl alkanesulfonate, G2: Adhesion promoter agent, 3-aminopropyltrimethoxysilane (Dynasylan ^® AMMO, Degussa Evonik); G3: catalyst TIB KAT 223, dioctyltin diketoate, G4: moisture scavenger, vinyltrimethoxysilane ( Dynasylan® ^VTMO , Degussa Evonik).

In a 150 ml high-speed mixing cup (PP 250 ml), 52.0 g of filler F1 was added to 29.2 g of polymer SMP1 and 14.6 g of plasticizer G1. The mixture was stirred in a SpeedMixer DAC 600.1 FVZ at 2300 rpm for 30 seconds at ambient temperature. Components A3, B1 and C1 in amounts according to the following Tables 4, 5 and 6 were added to the resulting mixture and stirred for a further 60 seconds at 2300 rpm. Finally, 0.9 g of adhesion promoter G2, 2.0 g of moisture scavenger G4 and 0.5 g of catalyst G3 were added to the resulting mixture and stirred at 2300 rpm for another 30 seconds. Control samples Control 1 to Control 6 were prepared using control stabilizers R1 and R2 accordingly.

The thermal stability, surface crack resistance, and color of each sample were determined using the test methods described in Section 4 below.

Use an alkaline blend as described in Table 4 below:

The test results are summarized in Tables 5 and 6 below.

The results confirmed that the combination of UV absorber A3, HALS B1 and phenolic antioxidant C1 of the present invention satisfied or improved the thermal stability and surface crack resistance of the control group (control group 1-control group 6). Typically, the stabilizer combination of the present invention had a 44% increase in thermal stability and a 67% increase in surface crack resistance compared to the control.

Furthermore, the experimental data show that although the combination of UV absorber A3 and HALS B1 of the present invention provided a combination of thermal stability and UV stability for SMP test samples in the absence of phenolic antioxidant C1, this Sufficient for many applications (thermal stability > 1000 hours, UV stability ≥ 500 hours, examples 5, 6, 17, 18), but the addition of phenols leads to a significant synergistic improvement in thermal stability and surface crack resistance (embodiment 7 to embodiment 16, embodiment 19).

The initial yellowness index (YI at 0 hours) did not change significantly in the samples according to the invention. The average YI of 6.29 is consistent with the results of control group 1 to control group 4, and lower than the results of control group 5 to control group 6 (combining conventional hindered amine light stabilizers and benzotriazole UV absorbers).

Furthermore, it was surprisingly found that the chemical nature of the phenolic antioxidants is important and that using the phenolic antioxidant C1 in combination with the stabilizer components A and B according to the invention an advantageous synergistic combination is achieved.

Controls 1 to 4 demonstrate that the inventive powdered stabilizer combination of UV absorber A3, hindered amine light stabilizer B1 and phenolic antioxidant C1 often outperforms conventional prior art combinations. Although the stabilizer combination control group 1 to control group 4 are classified as dangerous goods according to the current EU regulations on the classification of chemical substances, labeling and packaging, the powdered stabilizer combinations of examples 5 to 19 do not require this label. In addition, control group 1 to control group 4 prove that the liquid stabilizer combination of UV absorber A1 and/or A2, hindered amine light stabilizer B1, phenolic antioxidant C1 and liquefied diluent D of the present invention performs better than the conventional existing Technical Powdered Stabilizer Combinations (Example 1 to Example 4). The liquid stabilizer composition according to the invention also has the advantage that it can be easily metered and uniformly incorporated into the SMP polymer composition.

The other control groups 5 and 6 demonstrate that the conventional stabilizer combination of hindered amine light stabilizer and benzotriazole type UV absorber is particularly poor in terms of initial yellowness index (YI at 0 hours). 3. Preparation and testing of SMP test samples

SMP test samples were prepared according to the components and methods described in Section 2. The thermal stability, surface crack resistance, and color of each sample were determined using the test methods described in Section 4. The blend is based on Example 8 in Table 5 above and is listed below (all amounts are in g):

Components SMP1, F1, G1, G2, G4 and G3 are as previously described. The following stabilizers A, B and C were used: A3: UV absorber, 2-ethyl-2'-ethoxy-oxanilide without liquid diluent (CAS-No. 23949-66-8); B1 : HALS, 2,2,4,4-Tetramethyl-7-oxa-3,20-diazabispiro-20-(2,3-epoxy-propyl)bispiro-(5.1 .11.2) Reaction product of ^-eicosan -21-one and epichlorohydrin (Hostavin® N30 from Clariant); B2: Tinuvin® 622 (BASF SE), poly(4-hydroxy-2,2,6 ,6-tetramethyl-1-hexahydropyridine ethanol-alternating copolymerization-1,4-butanedioic acid) (CAS-No. 65447-77-0); C1: phenolic antioxidant, bis-(3,3 -bis-(4'-hydroxy-3'-tertiary butylphenyl)butanoic acid)-glycol ester (CAS-No. 32509-66-3); C2: Hostanox ^® P-EPQ from Clariant, with Tetrakis(2,4-bis(tertiary butyl)phenyl)-1,1-biphenyl-4,4'-diyl diphosphonite (CAS 38613-77-3) is the main component Component system; C3: Irganox ^® 1010, pentaerythritol tetrakis(3-(3,5-bis(tertiary butyl)-4-hydroxyphenyl)propionate), CAS-No. 6683-19-8; C4 : Tinuvin ^® 144 (BASF SE), butylmalonate bis(1,2,2,6,6-pentamethyl-4-hexahydropyridyl)-[[3,5-bis(1,1- Dimethylethyl)-4-hydroxyphenyl]methyl ester] (CAS-No. 63843-89-0).

The SMP formulations and test results are summarized in Tables 7 and 8 below.

The above examples demonstrate that the combination of stabilizer components A and B1 according to the invention comprising an oligomeric hindered amine light stabilizer according to formula (II)-1 leads to an excellent thermal stability compared to conventional oligomeric HALS such as Tinuvin® 622 Sexuality and UV stability (see embodiment 20 and control group 7).

Furthermore, the important influence of the chemical nature of the phenolic antioxidants has been demonstrated by the above examples. It was found that the use of the phenolic antioxidant C1 in combination with the stabilizer components A and B according to the invention, especially B1, achieves an advantageous synergistic combination. The beneficial effects regarding improved thermal stability and improved surface crack resistance (UV stability) were not achieved using another antioxidant (eg comparative antioxidants C2, C3 or C4). 4. Test method thermal stability

The thermal stability of the SMP samples prepared as described above was tested by the following procedure. Samples of 25x25x2 mm were cut from the cured film and placed on cardboard to ensure uniform temperature. The cardboard was placed in the central section of the oven and preheated at a set temperature of 110°C (Memmert UF30 ventilated oven). The oven is operated in a laboratory environment with a temperature control of 23±1°C and a humidity control of 50±5%. Samples are checked regularly. The maximum interval between observations at 110°C was 100 hours. Samples were classified as "Fail" at the first sign of cracking and were removed from the oven. Thermal stability is measured in hours until failure, as reported in Table 3. surface crack resistance

The UV stability (surface crack resistance) of the SMP samples prepared above was measured using a weather-o-meter (WoM) according to ISO4892-2 E2013 wet/dry. The cured samples were exposed to UV radiation for a drying cycle of 102 minutes followed by several cycles of water spraying with fresh demineralized water for 18 minutes. The radiation intensity is 60 W/m ² (300 to 400 nm). The test is carried out according to ISO 4892-2 E2013 at 50% relative humidity and a temperature of 65°C +/- 3°C (black standard).

Samples are inspected every 500 hours until 2000 hours, including visual inspection of surface cracks and color measurement. Samples are inspected every 100 hours since 2000 hours, including visual inspection of surface cracks and color measurement. Samples were recorded as "Fail" when surface cracks were visible. Surface crack resistance is listed in hours until failure. An initial failure of ≥ 500 hours is considered sufficient for many applications, especially in combination with other excellent properties such as thermal stability of ≥ 1000 hours and a good initial yellowness index, but an initial failure of ≥ 1000 hours is preferred. Surface crack resistance is listed in hours until failure as reported in Table 3. yellowing

The yellowness index (YI) of the test samples was measured according to ASTM E313 without UV radiation exposure. Furthermore, the color measurement according to the CIE color system was carried out before and after heat exposure at 110° C. for 1000 hours in a ventilated oven. Use a spectrophotometer Minolta CM-3600d calibrated with a zero box (Zero box) and a white reference plate to measure the CIE LAB values L*, a*, b* and dE, where L* defines the brightness, a* represents the red/green value, And b* represents the yellow/blue value. Table 3 lists the differences in CIE LAB values before and after UV radiation exposure.

Claims (19)

A stabilizer composition comprising: (A) at least one UV absorber as component A, wherein the UV absorber A comprises: (A1) one or more (2-hydroxyphenyl) compounds according to formula (I.1) )-symmetric-triazine compound as component A1:

wherein R _a , R _b , R _c , R _d , _Re and R _f are independently selected from hydrogen, an alkyl group having 1 to 20 carbon atoms, an alkyl group having 1 to 20 carbon atoms and 1 to 4 oxygen atom; and/or (A2) one or more oxanilide compounds according to formula (I.2) as component A2:

wherein R _a and R _b are independently selected from hydrogen, alkyl having 1 to 20 carbon atoms, alkoxy having 1 to 20 carbon atoms and 1 to 4 oxygen atoms, and (B) at least one A hindered amine light stabilizer as component B comprising at least one oligomeric hindered amine light stabilizer B1 according to formula (II)-1:

Wherein n and m are 0 to 100 independently of each other, preferably 0 to 10, more preferably 0 to 5 figures, and its prerequisite is that n and m are not all 0; R ₁ is hydrogen, has 5 to 7 A cycloalkyl group of carbon atoms, or an alkyl group having 1 to 12 carbon atoms; R ₂ and R ₃ are independently selected from hydrogen, an alkyl group having 1 to 18 carbon atoms, or an alkyl group connected to them The carbon atoms together are a 5 to 13 membered cycloalkyl ring, or together with the carbon atoms to which they are attached a group of formula (II)-4:

wherein R ₁ is as defined above; and R ₄ and R ₅ are independently selected from hydrogen, alkyl having 1 to 22 carbon atoms, oxy O*, -OH, -NO, -CH ₂ CN, benzene Methyl, allyl, alkoxy having 1 to 30 carbon atoms, cycloalkoxy having 5 to 12 carbon atoms, aryloxy having 6 to 10 carbon atoms, wherein the aryl can be additionally Substituted, aralkyloxy groups having 7 to 20 carbon atoms, wherein the aryl group may be additionally substituted, alkenyl groups having 3 to 10 carbon atoms, alkynyl groups having 3 to 6 carbon atoms, alkynyl groups having 1 to 6 carbon atoms Acyl of 10 carbon atoms, halogen, unsubstituted phenyl or phenyl substituted by C ₁ -C ₄ -alkyl. The stabilizer composition according to claim 1, wherein the at least one oligomeric hindered amine light stabilizer component B1 has a (weight average) molecular weight greater than 540 g/mol. The stabilizer composition as claimed in item 1 or 2, wherein the stabilizer composition further comprises at least one of the following components C, D and/or E: (C) at least one phenolic antioxidant as component C; (D) at least one liquid diluent as component D; and/or (E) At least one other additive as component E. The stabilizer composition as claimed in item 1 or 2, wherein the at least one phenolic antioxidant component C consists of one or more phenolic compounds according to formula (III) a and/or (III) b:

wherein R _x and R _y are independently selected from hydrogen, halogen or an alkyl group having 1 to 10 carbon atoms; R _z is selected from hydrogen or an alkyl group having 1 to 10 carbon atoms; R _w is selected from Hydroxy, alkoxy having 1 to 18 carbon atoms, phenylalkoxy having 1 to 4 alkyl carbon atoms, cycloalkoxy having 5 to 8 carbon atoms or a group of formula (III)c group

wherein Z ₁ and Z ₂ are independently selected from hydrogen, alkyl having 1 to 18 carbon atoms, phenyl and cycloalkyl having 5 to 8 carbon atoms; X is selected from -O-(CH ₂ ) _q -O-; -(OCH ₂ -CH ₂ ) _q -O-; -O-(CH ₂ ) _q -S-(CH ₂ ) _q -O; -NH-(CH ₂ ) _q -NH-; -NH-NH-, wherein q is an integer from 1 to 12, or the following groups:

p is 0 or an integer from 1 to 6. The stabilizer composition according to claim 1 or 2, wherein the stabilizer composition comprises at least one liquid diluent D selected from liquid additives, liquid solvents and combinations thereof. As the stabilizer composition of claim 1 or 2, wherein the stabilizer composition comprises: (A) 20 to 60% by weight of at least one UV absorber A, based on the total stabilizer composition; and (B) 40 to 80% by weight of at least one hindered amine light stabilizer, based on the total stabilizer composition, comprising at least one oligomeric hindered amine light stabilizer B1, Wherein the sum of the amounts of components A and B is 100% by weight of the stabilizer composition. As the stabilizer composition of claim 1 or 2, wherein the stabilizer composition comprises: (A) 15 to 49% by weight of at least one UV absorber A, based on the total stabilizer composition; (B) 20 to 69% by weight of at least one hindered amine light stabilizer B, based on the total stabilizer composition; and (C) 1 to 50% by weight of at least one phenolic antioxidant C, based on the total stabilizer composition; Wherein the sum of the amounts of components A, B and C is 100% by weight of the stabilizer composition. As the stabilizer composition of claim 1 or 2, wherein the stabilizer composition comprises: (A) 5 to 49% by weight of at least one UV absorber A, based on the total stabilizer composition; (B) 10 to 59% by weight of at least one hindered amine light stabilizer B, based on the total stabilizer composition; (C) 1 to 50% by weight of at least one phenolic antioxidant C, based on the total stabilizer composition; (D) 30 to 79% by weight of at least one liquid diluent D, based on the total stabilizer composition; and (E) 0 to 50% by weight of at least one other additive E, based on the total stabilizer composition; Wherein the sum of the amounts of components A, B, C, D and E is 100% by weight of the stabilizer composition. The stabilizer composition as claimed in item 1 or 2, wherein the UV absorber A comprises: (A1) one or more (2-hydroxyphenyl) according to formula (I.1)-1 and (I.1)-2 )-symmetric-triazine compound A1:

And/or (A2) one or more oxanilide compounds A2 selected from the compounds of the following formulas (I.2)-1 to (I.2)-7:

The stabilizer composition as claimed in item 1 or 2, wherein the hindered amine light stabilizer B consists of at least one compound of formula (II)-1 at 65 to 95% by weight based on component B, and component B is 5 to 35% by weight of at least one compound of formula (II)-2 and 0 to 10% by weight of at least one compound of formula (II)-3 based on component B form:

wherein n and m are independently of each other a number from 0 to 100, provided that n and m are not both 0; R is hydrogen, cycloalkyl having 5 to 7 carbon atoms, or having ₁ to 12 carbons Alkyl atoms; R ₂ and R ₃ are independently selected from hydrogen, alkyl groups having 1 to 18 carbon atoms, or together with the carbon atoms to which they are attached are 5 to 13 membered rings or The connected carbon atoms are together a group of formula (II)-4:

wherein R ₁ is as defined above, and R ₄ and R ₅ are independently selected from hydrogen, alkyl having 1 to 22 carbon atoms, oxy O*, -OH, -NO, -CH ₂ CN, benzene Methyl, allyl, alkoxy having 1 to 30 carbon atoms, cycloalkoxy having 5 to 12 carbon atoms, aryloxy having 6 to 10 carbon atoms, wherein the aryl can be additionally Substituted, aralkyloxy groups having 7 to 20 carbon atoms, wherein the aryl group may be additionally substituted, alkenyl groups having 3 to 10 carbon atoms, alkynyl groups having 3 to 6 carbon atoms, alkynyl groups having 1 to 6 carbon atoms Acyl of 10 carbon atoms, halogen, unsubstituted phenyl or phenyl substituted by C ₁ -C ₄ -alkyl. The stabilizer composition according to claim 10, wherein the hindered amine light stabilizer B is composed of compounds according to formulas (II)-1 and (II)-2 and optionally (II)-3, wherein n and m are independent of each other is a number from 0 to 5, provided that n and m are not both 0; R1 is an alkyl group having ₁ to ₄ carbon atoms; R2 and _R3 together with the carbon atoms to which they are attached are 6 to a 12-membered cycloalkyl ring, or together with the carbon atoms to which they are attached, a group of formula (II)-4; R ₄ and R ₅ are independently selected from hydrogen, having 1 to 4 carbon atoms An alkyl group, an alkoxy group having 1 to 6 carbon atoms, a cycloalkoxy group having 5 to 6 carbon atoms, and an acyl group having 1 to 4 carbon atoms. The stabilizer composition as claimed in item 3 or 4, wherein the antioxidant C comprises a phenolic compound according to formula (III) b, wherein R _x and R _y are independently selected from branches having 1 to 6 carbon atoms Alkyl; _Rz is selected from hydrogen or an alkyl group with 1 to 4 carbon atoms; X is -O-(CH ₂ ) _q -O-, wherein q is an integer of 2 to 4; and p is 1 to 4 an integer of . The stabilizer composition as claimed in item 3 or 4, which comprises: (A1) (2-hydroxyphenyl)-symmetric-triazine according to formula (I.1)-1 and/or (I.1)-2 Compound A1, preferably a (2-hydroxyphenyl)-symmetric-triazine compound according to the formulas (I.1)-1 and (I.1)-2:

(A2) Oxyanilide compound A2 according to formula (I.2)-1:

(B) at least one hindered amine light stabilizer B comprising at least one oligomeric hindered amine light stabilizer B1: and (C) at least one antioxidant C comprising the phenolic compound bis(3,3-bis(4 '-Hydroxy-3'-tertiary butylphenyl)butanoic acid)ethylene glycol ester. A method for preparing the stabilizer composition as claimed in claim 1 or 2, wherein the components A, and B, and optionally C, D and/or E are mixed together. A polymer composition comprising: (P) at least one polymer P selected from silicon-based modified polymers; (S) A stabilizer combination S consisting of: at least one UV absorber A; at least one hindered amine light stabilizer B; Optionally at least one phenolic antioxidant C; optionally at least one liquid diluent D; and Optionally at least one other additive E; Wherein the components A, B, C, D and E are as defined in claims 1 to 11; (F) optionally at least one filler F; (G) Optionally at least one other additive G. The polymer composition as claimed in item 15, wherein the polymer composition comprises: (P) Based on the total polymer composition, 5 to 99% by weight of at least one polymer P selected from silicon-based modified polymers; (S) A stabilizer combination S consisting of: 0.001 to 3% by weight of at least one UV absorber A, based on the total polymer composition; 0.001 to 3% by weight of at least one hindered amine light stabilizer B, based on the total polymer composition; and 0 to 3% by weight of at least one phenolic antioxidant C, based on the total polymer composition; 0 to 3% by weight of at least one liquid diluent D, based on the total polymer composition; 0 to 3% by weight of at least one other additive E, based on the total polymer composition; (F) 0 to 85% by weight of at least one filler F, based on the total polymer composition; (G) 0 to 35% by weight of at least one other additive G, based on the total polymer composition. The polymer composition as claimed in item 15 or 16, wherein the polymer composition comprises: (P) Based on the total polymer composition, 7.5 to 95% by weight of at least one polymer P selected from silicon-based modified polymers; (S) A stabilizer combination S consisting of: 0.001 to 3% by weight of at least one UV absorber A, based on the total polymer composition; 0.001 to 3% by weight of at least one hindered amine light stabilizer B, based on the total polymer composition; and 0.001 to 3% by weight of at least one phenolic antioxidant C, based on the total polymer composition; 0.001 to 3% by weight of at least one liquid diluent D, based on the total polymer composition; 0 to 3% by weight of at least one other additive E, based on the total polymer composition; (F) 1 to 80% by weight of at least one filler F, based on the total polymer composition; (G1) 1 to 25% by weight of at least one plasticizer, based on the total polymer composition, as further additive G1; (G2) 1 to 10% by weight, based on the total polymer composition, of at least one adhesion promoter as further additive G2; (G3) 0.01 to 3% by weight of at least one catalyst as further additive G3, based on the total polymer composition; (G) Based on the total polymer composition, 0 to 10% by weight of at least one other additive G different from G1 to G3. The polymer composition according to claim 15 or 16, wherein the silicon-based modified polymer P is selected from silicon-based modified polyethers of the following formula (P-II):

Wherein Q ₁ , Q ₂ and Q ₃ are independently selected from an alkyl group having 1 to 40 carbon atoms and an alkoxy group having 1 to 10 carbon atoms, and the prerequisites are that Q ₁ , Q ₂ and Q At least one of ₃ is a crosslinkable hydrolyzable silicon group, and n ₁ and n ₂ are independently integers from 0 to 1000, with the prerequisite that n ₁ +n ₂ is at least 50. The polymer composition as claimed in claim 15 or 16, wherein the stabilizer combination S comprises: (A) at least one UV absorber A comprising: (A1) according to formula (I.1)-1 and/or (I (2-hydroxyphenyl)-symmetric-triazine compounds (A1) of 1)-2, preferably (2-hydroxyphenyl) according to the formulas (I.1)-1 and (I.1)-2 )-symmetric-triazine compounds:

And/or (A2) oxanilide compound A2 according to formula (I.2)-1:

(B) at least one hindered amine light stabilizer B comprising at least one oligomeric hindered amine light stabilizer B1: and (C) at least one phenolic antioxidant C comprising the phenolic compound bis(3,3-bis Ethylene glycol (4'-hydroxy-3'-tert-butylphenyl)butyrate.